Home / 31,067.64-42,871.20-17,639.16

Finding the Fourth Proportional to 31,067.64, 42,871.20 and 17,639.16

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Solution

The fourth proportional to 31,067.64, 42,871.20 and 17,639.16 is: 24,340.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,067.64 : 42,871.20 = 17,639.16 : x
  2. Step 2: Convert to fraction form
    31,067.64/42,871.20 = 17,639.16/x
  3. Step 3: Cross multiply
    31,067.64x = 42,871.20 × 17,639.16
  4. Step 4: Simplify right side
    31,067.64x = 756,211,956.19
  5. Step 5: Solve for x
    x = 756,211,956.19/31,067.64
  6. Step 6: Final answer
    x = 24,340.82

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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.