Home / 13,203.06-18,220.65-7,235.13

Finding the Fourth Proportional to 13,203.06, 18,220.65 and 7,235.13

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Solution

The fourth proportional to 13,203.06, 18,220.65 and 7,235.13 is: 9,984.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.06 : 18,220.65 = 7,235.13 : x
  2. Step 2: Convert to fraction form
    13,203.06/18,220.65 = 7,235.13/x
  3. Step 3: Cross multiply
    13,203.06x = 18,220.65 × 7,235.13
  4. Step 4: Simplify right side
    13,203.06x = 131,828,771.43
  5. Step 5: Solve for x
    x = 131,828,771.43/13,203.06
  6. Step 6: Final answer
    x = 9,984.71

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Half scale
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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.