Home / 28,508.28-39,337.02-15,930.60

Finding the Fourth Proportional to 28,508.28, 39,337.02 and 15,930.60

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Solution

The fourth proportional to 28,508.28, 39,337.02 and 15,930.60 is: 21,981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.28 : 39,337.02 = 15,930.60 : x
  2. Step 2: Convert to fraction form
    28,508.28/39,337.02 = 15,930.60/x
  3. Step 3: Cross multiply
    28,508.28x = 39,337.02 × 15,930.60
  4. Step 4: Simplify right side
    28,508.28x = 626,662,330.81
  5. Step 5: Solve for x
    x = 626,662,330.81/28,508.28
  6. Step 6: Final answer
    x = 21,981.77

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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.