Home / 28,319.52-42,421.68-14,270.88

Finding the Fourth Proportional to 28,319.52, 42,421.68 and 14,270.88

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Solution

The fourth proportional to 28,319.52, 42,421.68 and 14,270.88 is: 21,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.52 : 42,421.68 = 14,270.88 : x
  2. Step 2: Convert to fraction form
    28,319.52/42,421.68 = 14,270.88/x
  3. Step 3: Cross multiply
    28,319.52x = 42,421.68 × 14,270.88
  4. Step 4: Simplify right side
    28,319.52x = 605,394,704.68
  5. Step 5: Solve for x
    x = 605,394,704.68/28,319.52
  6. Step 6: Final answer
    x = 21,377.29

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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.