Home / 39,856.19-55,001.90-21,951.24

Finding the Fourth Proportional to 39,856.19, 55,001.90 and 21,951.24

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Solution

The fourth proportional to 39,856.19, 55,001.90 and 21,951.24 is: 30,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,856.19 : 55,001.90 = 21,951.24 : x
  2. Step 2: Convert to fraction form
    39,856.19/55,001.90 = 21,951.24/x
  3. Step 3: Cross multiply
    39,856.19x = 55,001.90 × 21,951.24
  4. Step 4: Simplify right side
    39,856.19x = 1,207,359,797.60
  5. Step 5: Solve for x
    x = 1,207,359,797.60/39,856.19
  6. Step 6: Final answer
    x = 30,292.91

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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.