Home / 28,000.57-38,640.77-15,425.32

Finding the Fourth Proportional to 28,000.57, 38,640.77 and 15,425.32

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Solution

The fourth proportional to 28,000.57, 38,640.77 and 15,425.32 is: 21,286.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.57 : 38,640.77 = 15,425.32 : x
  2. Step 2: Convert to fraction form
    28,000.57/38,640.77 = 15,425.32/x
  3. Step 3: Cross multiply
    28,000.57x = 38,640.77 × 15,425.32
  4. Step 4: Simplify right side
    28,000.57x = 596,046,290.60
  5. Step 5: Solve for x
    x = 596,046,290.60/28,000.57
  6. Step 6: Final answer
    x = 21,286.93

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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.