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Finding the Fourth Proportional to 43,471.64, 65,207.42 and 12,306.90

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Solution

The fourth proportional to 43,471.64, 65,207.42 and 12,306.90 is: 18,460.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,471.64 : 65,207.42 = 12,306.90 : x
  2. Step 2: Convert to fraction form
    43,471.64/65,207.42 = 12,306.90/x
  3. Step 3: Cross multiply
    43,471.64x = 65,207.42 × 12,306.90
  4. Step 4: Simplify right side
    43,471.64x = 802,501,197.20
  5. Step 5: Solve for x
    x = 802,501,197.20/43,471.64
  6. Step 6: Final answer
    x = 18,460.34

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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.