Home / 28,251.87-38,986.23-15,504.76

Finding the Fourth Proportional to 28,251.87, 38,986.23 and 15,504.76

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Solution

The fourth proportional to 28,251.87, 38,986.23 and 15,504.76 is: 21,395.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.87 : 38,986.23 = 15,504.76 : x
  2. Step 2: Convert to fraction form
    28,251.87/38,986.23 = 15,504.76/x
  3. Step 3: Cross multiply
    28,251.87x = 38,986.23 × 15,504.76
  4. Step 4: Simplify right side
    28,251.87x = 604,472,139.45
  5. Step 5: Solve for x
    x = 604,472,139.45/28,251.87
  6. Step 6: Final answer
    x = 21,395.83

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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.