Home / 31,398.90-43,318.20-17,962.95

Finding the Fourth Proportional to 31,398.90, 43,318.20 and 17,962.95

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Solution

The fourth proportional to 31,398.90, 43,318.20 and 17,962.95 is: 24,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,398.90 : 43,318.20 = 17,962.95 : x
  2. Step 2: Convert to fraction form
    31,398.90/43,318.20 = 17,962.95/x
  3. Step 3: Cross multiply
    31,398.90x = 43,318.20 × 17,962.95
  4. Step 4: Simplify right side
    31,398.90x = 778,122,660.69
  5. Step 5: Solve for x
    x = 778,122,660.69/31,398.90
  6. Step 6: Final answer
    x = 24,781.84

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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.