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Finding the Fourth Proportional to 29,464.80, 40,659.16 and 18,708.88

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Solution

The fourth proportional to 29,464.80, 40,659.16 and 18,708.88 is: 25,816.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,464.80 : 40,659.16 = 18,708.88 : x
  2. Step 2: Convert to fraction form
    29,464.80/40,659.16 = 18,708.88/x
  3. Step 3: Cross multiply
    29,464.80x = 40,659.16 × 18,708.88
  4. Step 4: Simplify right side
    29,464.80x = 760,687,345.34
  5. Step 5: Solve for x
    x = 760,687,345.34/29,464.80
  6. Step 6: Final answer
    x = 25,816.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.