Home / 40,134.59-55,385.12-21,985.17

Finding the Fourth Proportional to 40,134.59, 55,385.12 and 21,985.17

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Solution

The fourth proportional to 40,134.59, 55,385.12 and 21,985.17 is: 30,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,134.59 : 55,385.12 = 21,985.17 : x
  2. Step 2: Convert to fraction form
    40,134.59/55,385.12 = 21,985.17/x
  3. Step 3: Cross multiply
    40,134.59x = 55,385.12 × 21,985.17
  4. Step 4: Simplify right side
    40,134.59x = 1,217,651,125.94
  5. Step 5: Solve for x
    x = 1,217,651,125.94/40,134.59
  6. Step 6: Final answer
    x = 30,339.20

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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.