Home / 28,000.25-38,640.33-15,425.00

Finding the Fourth Proportional to 28,000.25, 38,640.33 and 15,425.00

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Solution

The fourth proportional to 28,000.25, 38,640.33 and 15,425.00 is: 21,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.25 : 38,640.33 = 15,425.00 : x
  2. Step 2: Convert to fraction form
    28,000.25/38,640.33 = 15,425.00/x
  3. Step 3: Cross multiply
    28,000.25x = 38,640.33 × 15,425.00
  4. Step 4: Simplify right side
    28,000.25x = 596,027,041.95
  5. Step 5: Solve for x
    x = 596,027,041.95/28,000.25
  6. Step 6: Final answer
    x = 21,286.49

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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.