Home / 22,675.60-31,287.50-13,721.32

Finding the Fourth Proportional to 22,675.60, 31,287.50 and 13,721.32

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Solution

The fourth proportional to 22,675.60, 31,287.50 and 13,721.32 is: 18,932.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,675.60 : 31,287.50 = 13,721.32 : x
  2. Step 2: Convert to fraction form
    22,675.60/31,287.50 = 13,721.32/x
  3. Step 3: Cross multiply
    22,675.60x = 31,287.50 × 13,721.32
  4. Step 4: Simplify right side
    22,675.60x = 429,305,799.50
  5. Step 5: Solve for x
    x = 429,305,799.50/22,675.60
  6. Step 6: Final answer
    x = 18,932.50

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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.