Home / 13,313,533,718.37-18,372,686,436.57-7,209,933,656.59

Finding the Fourth Proportional to 13,313,533,718.37, 18,372,686,436.57 and 7,209,933,656.59

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Solution

The fourth proportional to 13,313,533,718.37, 18,372,686,436.57 and 7,209,933,656.59 is: 9,949,713,810.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313,533,718.37 : 18,372,686,436.57 = 7,209,933,656.59 : x
  2. Step 2: Convert to fraction form
    13,313,533,718.37/18,372,686,436.57 = 7,209,933,656.59/x
  3. Step 3: Cross multiply
    13,313,533,718.37x = 18,372,686,436.57 × 7,209,933,656.59
  4. Step 4: Simplify right side
    13,313,533,718.37x = 132,465,850,301,000,630,272
  5. Step 5: Solve for x
    x = 132,465,850,301,000,630,272/13,313,533,718.37
  6. Step 6: Final answer
    x = 9,949,713,810.26

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.