Home / 28,191.72-42,280.28-13,371.15

Finding the Fourth Proportional to 28,191.72, 42,280.28 and 13,371.15

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Solution

The fourth proportional to 28,191.72, 42,280.28 and 13,371.15 is: 20,053.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.72 : 42,280.28 = 13,371.15 : x
  2. Step 2: Convert to fraction form
    28,191.72/42,280.28 = 13,371.15/x
  3. Step 3: Cross multiply
    28,191.72x = 42,280.28 × 13,371.15
  4. Step 4: Simplify right side
    28,191.72x = 565,335,787.95
  5. Step 5: Solve for x
    x = 565,335,787.95/28,191.72
  6. Step 6: Final answer
    x = 20,053.26

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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.