Home / 28,191.47-42,279.91-13,370.90

Finding the Fourth Proportional to 28,191.47, 42,279.91 and 13,370.90

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Solution

The fourth proportional to 28,191.47, 42,279.91 and 13,370.90 is: 20,052.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.47 : 42,279.91 = 13,370.90 : x
  2. Step 2: Convert to fraction form
    28,191.47/42,279.91 = 13,370.90/x
  3. Step 3: Cross multiply
    28,191.47x = 42,279.91 × 13,370.90
  4. Step 4: Simplify right side
    28,191.47x = 565,320,203.79
  5. Step 5: Solve for x
    x = 565,320,203.79/28,191.47
  6. Step 6: Final answer
    x = 20,052.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.