Home / 10,122.38-15,193.29-4,931.90

Finding the Fourth Proportional to 10,122.38, 15,193.29 and 4,931.90

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Solution

The fourth proportional to 10,122.38, 15,193.29 and 4,931.90 is: 7,402.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.38 : 15,193.29 = 4,931.90 : x
  2. Step 2: Convert to fraction form
    10,122.38/15,193.29 = 4,931.90/x
  3. Step 3: Cross multiply
    10,122.38x = 15,193.29 × 4,931.90
  4. Step 4: Simplify right side
    10,122.38x = 74,931,824.93
  5. Step 5: Solve for x
    x = 74,931,824.93/10,122.38
  6. Step 6: Final answer
    x = 7,402.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.