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Finding the Fourth Proportional to 17,471.80, 26,246.10 and 12,287.80

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Solution

The fourth proportional to 17,471.80, 26,246.10 and 12,287.80 is: 18,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,471.80 : 26,246.10 = 12,287.80 : x
  2. Step 2: Convert to fraction form
    17,471.80/26,246.10 = 12,287.80/x
  3. Step 3: Cross multiply
    17,471.80x = 26,246.10 × 12,287.80
  4. Step 4: Simplify right side
    17,471.80x = 322,506,827.58
  5. Step 5: Solve for x
    x = 322,506,827.58/17,471.80
  6. Step 6: Final answer
    x = 18,458.71

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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.