Home / 39,855.55-55,001.01-21,951.18

Finding the Fourth Proportional to 39,855.55, 55,001.01 and 21,951.18

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Solution

The fourth proportional to 39,855.55, 55,001.01 and 21,951.18 is: 30,292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855.55 : 55,001.01 = 21,951.18 : x
  2. Step 2: Convert to fraction form
    39,855.55/55,001.01 = 21,951.18/x
  3. Step 3: Cross multiply
    39,855.55x = 55,001.01 × 21,951.18
  4. Step 4: Simplify right side
    39,855.55x = 1,207,337,070.69
  5. Step 5: Solve for x
    x = 1,207,337,070.69/39,855.55
  6. Step 6: Final answer
    x = 30,292.82

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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.