Home / 13,421,216.35-18,520,618.41-7,619,236.57

Finding the Fourth Proportional to 13,421,216.35, 18,520,618.41 and 7,619,236.57

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Solution

The fourth proportional to 13,421,216.35, 18,520,618.41 and 7,619,236.57 is: 10,514,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,216.35 : 18,520,618.41 = 7,619,236.57 : x
  2. Step 2: Convert to fraction form
    13,421,216.35/18,520,618.41 = 7,619,236.57/x
  3. Step 3: Cross multiply
    13,421,216.35x = 18,520,618.41 × 7,619,236.57
  4. Step 4: Simplify right side
    13,421,216.35x = 141,112,973,088,487.25
  5. Step 5: Solve for x
    x = 141,112,973,088,487.25/13,421,216.35
  6. Step 6: Final answer
    x = 10,514,171.70

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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.