Home / 10,268.28-15,402.42-7,931.70

Finding the Fourth Proportional to 10,268.28, 15,402.42 and 7,931.70

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Solution

The fourth proportional to 10,268.28, 15,402.42 and 7,931.70 is: 11,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,268.28 : 15,402.42 = 7,931.70 : x
  2. Step 2: Convert to fraction form
    10,268.28/15,402.42 = 7,931.70/x
  3. Step 3: Cross multiply
    10,268.28x = 15,402.42 × 7,931.70
  4. Step 4: Simplify right side
    10,268.28x = 122,167,374.71
  5. Step 5: Solve for x
    x = 122,167,374.71/10,268.28
  6. Step 6: Final answer
    x = 11,897.55

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1.5x scale

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.