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Finding the Fourth Proportional to 31,838.64, 43,934.04 and 17,689.92

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Solution

The fourth proportional to 31,838.64, 43,934.04 and 17,689.92 is: 24,410.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,838.64 : 43,934.04 = 17,689.92 : x
  2. Step 2: Convert to fraction form
    31,838.64/43,934.04 = 17,689.92/x
  3. Step 3: Cross multiply
    31,838.64x = 43,934.04 × 17,689.92
  4. Step 4: Simplify right side
    31,838.64x = 777,189,652.88
  5. Step 5: Solve for x
    x = 777,189,652.88/31,838.64
  6. Step 6: Final answer
    x = 24,410.27

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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.