Home / 20,531.25-28,333.55-11,577.04

Finding the Fourth Proportional to 20,531.25, 28,333.55 and 11,577.04

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Solution

The fourth proportional to 20,531.25, 28,333.55 and 11,577.04 is: 15,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.25 : 28,333.55 = 11,577.04 : x
  2. Step 2: Convert to fraction form
    20,531.25/28,333.55 = 11,577.04/x
  3. Step 3: Cross multiply
    20,531.25x = 28,333.55 × 11,577.04
  4. Step 4: Simplify right side
    20,531.25x = 328,018,599.80
  5. Step 5: Solve for x
    x = 328,018,599.80/20,531.25
  6. Step 6: Final answer
    x = 15,976.55

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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.