Home / 13,356.38-18,430.17-7,387.29

Finding the Fourth Proportional to 13,356.38, 18,430.17 and 7,387.29

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Solution

The fourth proportional to 13,356.38, 18,430.17 and 7,387.29 is: 10,193.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.38 : 18,430.17 = 7,387.29 : x
  2. Step 2: Convert to fraction form
    13,356.38/18,430.17 = 7,387.29/x
  3. Step 3: Cross multiply
    13,356.38x = 18,430.17 × 7,387.29
  4. Step 4: Simplify right side
    13,356.38x = 136,149,010.54
  5. Step 5: Solve for x
    x = 136,149,010.54/13,356.38
  6. Step 6: Final answer
    x = 10,193.56

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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.