Home / 21,472.68-29,632.54-11,912.76

Finding the Fourth Proportional to 21,472.68, 29,632.54 and 11,912.76

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Solution

The fourth proportional to 21,472.68, 29,632.54 and 11,912.76 is: 16,439.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.68 : 29,632.54 = 11,912.76 : x
  2. Step 2: Convert to fraction form
    21,472.68/29,632.54 = 11,912.76/x
  3. Step 3: Cross multiply
    21,472.68x = 29,632.54 × 11,912.76
  4. Step 4: Simplify right side
    21,472.68x = 353,005,337.21
  5. Step 5: Solve for x
    x = 353,005,337.21/21,472.68
  6. Step 6: Final answer
    x = 16,439.74

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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.