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Finding the Fourth Proportional to 12,560.88, 18,841.30 and 4,769.68

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Solution

The fourth proportional to 12,560.88, 18,841.30 and 4,769.68 is: 7,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560.88 : 18,841.30 = 4,769.68 : x
  2. Step 2: Convert to fraction form
    12,560.88/18,841.30 = 4,769.68/x
  3. Step 3: Cross multiply
    12,560.88x = 18,841.30 × 4,769.68
  4. Step 4: Simplify right side
    12,560.88x = 89,866,971.78
  5. Step 5: Solve for x
    x = 89,866,971.78/12,560.88
  6. Step 6: Final answer
    x = 7,154.51

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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.