Home / 37,138.50-51,251.40-20,371.50

Finding the Fourth Proportional to 37,138.50, 51,251.40 and 20,371.50

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Solution

The fourth proportional to 37,138.50, 51,251.40 and 20,371.50 is: 28,112.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,138.50 : 51,251.40 = 20,371.50 : x
  2. Step 2: Convert to fraction form
    37,138.50/51,251.40 = 20,371.50/x
  3. Step 3: Cross multiply
    37,138.50x = 51,251.40 × 20,371.50
  4. Step 4: Simplify right side
    37,138.50x = 1,044,067,895.10
  5. Step 5: Solve for x
    x = 1,044,067,895.10/37,138.50
  6. Step 6: Final answer
    x = 28,112.82

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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.