Home / 20,516.02-28,311.28-11,565.38

Finding the Fourth Proportional to 20,516.02, 28,311.28 and 11,565.38

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Solution

The fourth proportional to 20,516.02, 28,311.28 and 11,565.38 is: 15,959.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.02 : 28,311.28 = 11,565.38 : x
  2. Step 2: Convert to fraction form
    20,516.02/28,311.28 = 11,565.38/x
  3. Step 3: Cross multiply
    20,516.02x = 28,311.28 × 11,565.38
  4. Step 4: Simplify right side
    20,516.02x = 327,430,711.49
  5. Step 5: Solve for x
    x = 327,430,711.49/20,516.02
  6. Step 6: Final answer
    x = 15,959.76

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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.