Home / 13,397.10-18,488.05-7,428.92

Finding the Fourth Proportional to 13,397.10, 18,488.05 and 7,428.92

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Solution

The fourth proportional to 13,397.10, 18,488.05 and 7,428.92 is: 10,251.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.10 : 18,488.05 = 7,428.92 : x
  2. Step 2: Convert to fraction form
    13,397.10/18,488.05 = 7,428.92/x
  3. Step 3: Cross multiply
    13,397.10x = 18,488.05 × 7,428.92
  4. Step 4: Simplify right side
    13,397.10x = 137,346,133.39
  5. Step 5: Solve for x
    x = 137,346,133.39/13,397.10
  6. Step 6: Final answer
    x = 10,251.93

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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.