Home / 28,451.97-39,264.95-15,876.72

Finding the Fourth Proportional to 28,451.97, 39,264.95 and 15,876.72

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Solution

The fourth proportional to 28,451.97, 39,264.95 and 15,876.72 is: 21,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.97 : 39,264.95 = 15,876.72 : x
  2. Step 2: Convert to fraction form
    28,451.97/39,264.95 = 15,876.72/x
  3. Step 3: Cross multiply
    28,451.97x = 39,264.95 × 15,876.72
  4. Step 4: Simplify right side
    28,451.97x = 623,398,616.96
  5. Step 5: Solve for x
    x = 623,398,616.96/28,451.97
  6. Step 6: Final answer
    x = 21,910.56

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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.