Home / 13,398.28-18,490.92-7,429.93

Finding the Fourth Proportional to 13,398.28, 18,490.92 and 7,429.93

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Solution

The fourth proportional to 13,398.28, 18,490.92 and 7,429.93 is: 10,254.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.28 : 18,490.92 = 7,429.93 : x
  2. Step 2: Convert to fraction form
    13,398.28/18,490.92 = 7,429.93/x
  3. Step 3: Cross multiply
    13,398.28x = 18,490.92 × 7,429.93
  4. Step 4: Simplify right side
    13,398.28x = 137,386,167.15
  5. Step 5: Solve for x
    x = 137,386,167.15/13,398.28
  6. Step 6: Final answer
    x = 10,254.02

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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.