Home / 37,139.77-51,251.97-21,223.20

Finding the Fourth Proportional to 37,139.77, 51,251.97 and 21,223.20

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Solution

The fourth proportional to 37,139.77, 51,251.97 and 21,223.20 is: 29,287.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,139.77 : 51,251.97 = 21,223.20 : x
  2. Step 2: Convert to fraction form
    37,139.77/51,251.97 = 21,223.20/x
  3. Step 3: Cross multiply
    37,139.77x = 51,251.97 × 21,223.20
  4. Step 4: Simplify right side
    37,139.77x = 1,087,730,809.70
  5. Step 5: Solve for x
    x = 1,087,730,809.70/37,139.77
  6. Step 6: Final answer
    x = 29,287.49

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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.