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Finding the Fourth Proportional to 43,754.92, 65,632.40 and 12,590.20

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Solution

The fourth proportional to 43,754.92, 65,632.40 and 12,590.20 is: 18,885.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,754.92 : 65,632.40 = 12,590.20 : x
  2. Step 2: Convert to fraction form
    43,754.92/65,632.40 = 12,590.20/x
  3. Step 3: Cross multiply
    43,754.92x = 65,632.40 × 12,590.20
  4. Step 4: Simplify right side
    43,754.92x = 826,325,042.48
  5. Step 5: Solve for x
    x = 826,325,042.48/43,754.92
  6. Step 6: Final answer
    x = 18,885.31

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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.