Home / 13,397.64-18,488.10-7,428.84

Finding the Fourth Proportional to 13,397.64, 18,488.10 and 7,428.84

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Solution

The fourth proportional to 13,397.64, 18,488.10 and 7,428.84 is: 10,251.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.64 : 18,488.10 = 7,428.84 : x
  2. Step 2: Convert to fraction form
    13,397.64/18,488.10 = 7,428.84/x
  3. Step 3: Cross multiply
    13,397.64x = 18,488.10 × 7,428.84
  4. Step 4: Simplify right side
    13,397.64x = 137,345,136.80
  5. Step 5: Solve for x
    x = 137,345,136.80/13,397.64
  6. Step 6: Final answer
    x = 10,251.44

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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.