Home / 13,397.40-18,489.51-7,429.68

Finding the Fourth Proportional to 13,397.40, 18,489.51 and 7,429.68

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Solution

The fourth proportional to 13,397.40, 18,489.51 and 7,429.68 is: 10,253.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.40 : 18,489.51 = 7,429.68 : x
  2. Step 2: Convert to fraction form
    13,397.40/18,489.51 = 7,429.68/x
  3. Step 3: Cross multiply
    13,397.40x = 18,489.51 × 7,429.68
  4. Step 4: Simplify right side
    13,397.40x = 137,371,142.66
  5. Step 5: Solve for x
    x = 137,371,142.66/13,397.40
  6. Step 6: Final answer
    x = 10,253.57

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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.