Home / 28,013.38-38,658.47-15,438.13

Finding the Fourth Proportional to 28,013.38, 38,658.47 and 15,438.13

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Solution

The fourth proportional to 28,013.38, 38,658.47 and 15,438.13 is: 21,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.38 : 38,658.47 = 15,438.13 : x
  2. Step 2: Convert to fraction form
    28,013.38/38,658.47 = 15,438.13/x
  3. Step 3: Cross multiply
    28,013.38x = 38,658.47 × 15,438.13
  4. Step 4: Simplify right side
    28,013.38x = 596,814,311.62
  5. Step 5: Solve for x
    x = 596,814,311.62/28,013.38
  6. Step 6: Final answer
    x = 21,304.62

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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.