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Finding the Fourth Proportional to 12,471.13, 18,706.69 and 4,674.47

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Solution

The fourth proportional to 12,471.13, 18,706.69 and 4,674.47 is: 7,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.13 : 18,706.69 = 4,674.47 : x
  2. Step 2: Convert to fraction form
    12,471.13/18,706.69 = 4,674.47/x
  3. Step 3: Cross multiply
    12,471.13x = 18,706.69 × 4,674.47
  4. Step 4: Simplify right side
    12,471.13x = 87,443,861.20
  5. Step 5: Solve for x
    x = 87,443,861.20/12,471.13
  6. Step 6: Final answer
    x = 7,011.70

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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.