Home / 31,508.14-43,497.30-21,352.82

Finding the Fourth Proportional to 31,508.14, 43,497.30 and 21,352.82

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Solution

The fourth proportional to 31,508.14, 43,497.30 and 21,352.82 is: 29,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,508.14 : 43,497.30 = 21,352.82 : x
  2. Step 2: Convert to fraction form
    31,508.14/43,497.30 = 21,352.82/x
  3. Step 3: Cross multiply
    31,508.14x = 43,497.30 × 21,352.82
  4. Step 4: Simplify right side
    31,508.14x = 928,790,017.39
  5. Step 5: Solve for x
    x = 928,790,017.39/31,508.14
  6. Step 6: Final answer
    x = 29,477.78

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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.