Home / 20,715.52-28,586.43-11,761.85

Finding the Fourth Proportional to 20,715.52, 28,586.43 and 11,761.85

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Solution

The fourth proportional to 20,715.52, 28,586.43 and 11,761.85 is: 16,230.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.52 : 28,586.43 = 11,761.85 : x
  2. Step 2: Convert to fraction form
    20,715.52/28,586.43 = 11,761.85/x
  3. Step 3: Cross multiply
    20,715.52x = 28,586.43 × 11,761.85
  4. Step 4: Simplify right side
    20,715.52x = 336,229,158.76
  5. Step 5: Solve for x
    x = 336,229,158.76/20,715.52
  6. Step 6: Final answer
    x = 16,230.79

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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.