Home / 15,769.28-21,761.72-8,695.92

Finding the Fourth Proportional to 15,769.28, 21,761.72 and 8,695.92

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Solution

The fourth proportional to 15,769.28, 21,761.72 and 8,695.92 is: 12,000.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.28 : 21,761.72 = 8,695.92 : x
  2. Step 2: Convert to fraction form
    15,769.28/21,761.72 = 8,695.92/x
  3. Step 3: Cross multiply
    15,769.28x = 21,761.72 × 8,695.92
  4. Step 4: Simplify right side
    15,769.28x = 189,238,176.18
  5. Step 5: Solve for x
    x = 189,238,176.18/15,769.28
  6. Step 6: Final answer
    x = 12,000.43

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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.