Home / 37,139.28-51,248.88-21,223.68

Finding the Fourth Proportional to 37,139.28, 51,248.88 and 21,223.68

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Solution

The fourth proportional to 37,139.28, 51,248.88 and 21,223.68 is: 29,286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,139.28 : 51,248.88 = 21,223.68 : x
  2. Step 2: Convert to fraction form
    37,139.28/51,248.88 = 21,223.68/x
  3. Step 3: Cross multiply
    37,139.28x = 51,248.88 × 21,223.68
  4. Step 4: Simplify right side
    37,139.28x = 1,087,689,829.48
  5. Step 5: Solve for x
    x = 1,087,689,829.48/37,139.28
  6. Step 6: Final answer
    x = 29,286.78

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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.