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Finding the Fourth Proportional to 29,259.12, 43,893 and 8,479.92

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Solution

The fourth proportional to 29,259.12, 43,893 and 8,479.92 is: 12,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,259.12 : 43,893 = 8,479.92 : x
  2. Step 2: Convert to fraction form
    29,259.12/43,893 = 8,479.92/x
  3. Step 3: Cross multiply
    29,259.12x = 43,893 × 8,479.92
  4. Step 4: Simplify right side
    29,259.12x = 372,209,128.56
  5. Step 5: Solve for x
    x = 372,209,128.56/29,259.12
  6. Step 6: Final answer
    x = 12,721.13

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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.