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Finding the Fourth Proportional to 28,559.04, 42,836.16 and 9,839.04

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Solution

The fourth proportional to 28,559.04, 42,836.16 and 9,839.04 is: 14,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.04 : 42,836.16 = 9,839.04 : x
  2. Step 2: Convert to fraction form
    28,559.04/42,836.16 = 9,839.04/x
  3. Step 3: Cross multiply
    28,559.04x = 42,836.16 × 9,839.04
  4. Step 4: Simplify right side
    28,559.04x = 421,466,691.69
  5. Step 5: Solve for x
    x = 421,466,691.69/28,559.04
  6. Step 6: Final answer
    x = 14,757.73

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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.