Home / 31,371.12-47,046.24-12,646.32

Finding the Fourth Proportional to 31,371.12, 47,046.24 and 12,646.32

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Solution

The fourth proportional to 31,371.12, 47,046.24 and 12,646.32 is: 18,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,371.12 : 47,046.24 = 12,646.32 : x
  2. Step 2: Convert to fraction form
    31,371.12/47,046.24 = 12,646.32/x
  3. Step 3: Cross multiply
    31,371.12x = 47,046.24 × 12,646.32
  4. Step 4: Simplify right side
    31,371.12x = 594,961,805.84
  5. Step 5: Solve for x
    x = 594,961,805.84/31,371.12
  6. Step 6: Final answer
    x = 18,965.27

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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.