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Finding the Fourth Proportional to 28,560.63, 42,841.08 and 8,839.29

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Solution

The fourth proportional to 28,560.63, 42,841.08 and 8,839.29 is: 13,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.63 : 42,841.08 = 8,839.29 : x
  2. Step 2: Convert to fraction form
    28,560.63/42,841.08 = 8,839.29/x
  3. Step 3: Cross multiply
    28,560.63x = 42,841.08 × 8,839.29
  4. Step 4: Simplify right side
    28,560.63x = 378,684,730.03
  5. Step 5: Solve for x
    x = 378,684,730.03/28,560.63
  6. Step 6: Final answer
    x = 13,258.98

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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.