Home / 28,064.64-42,079.20-15,761.28

Finding the Fourth Proportional to 28,064.64, 42,079.20 and 15,761.28

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Solution

The fourth proportional to 28,064.64, 42,079.20 and 15,761.28 is: 23,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.64 : 42,079.20 = 15,761.28 : x
  2. Step 2: Convert to fraction form
    28,064.64/42,079.20 = 15,761.28/x
  3. Step 3: Cross multiply
    28,064.64x = 42,079.20 × 15,761.28
  4. Step 4: Simplify right side
    28,064.64x = 663,222,053.38
  5. Step 5: Solve for x
    x = 663,222,053.38/28,064.64
  6. Step 6: Final answer
    x = 23,631.95

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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.