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Finding the Fourth Proportional to 28,164.40, 42,251.70 and 13,373.20

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Solution

The fourth proportional to 28,164.40, 42,251.70 and 13,373.20 is: 20,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.40 : 42,251.70 = 13,373.20 : x
  2. Step 2: Convert to fraction form
    28,164.40/42,251.70 = 13,373.20/x
  3. Step 3: Cross multiply
    28,164.40x = 42,251.70 × 13,373.20
  4. Step 4: Simplify right side
    28,164.40x = 565,040,434.44
  5. Step 5: Solve for x
    x = 565,040,434.44/28,164.40
  6. Step 6: Final answer
    x = 20,062.22

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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.