Home / 21,510.62-29,685.03-11,951.38

Finding the Fourth Proportional to 21,510.62, 29,685.03 and 11,951.38

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Solution

The fourth proportional to 21,510.62, 29,685.03 and 11,951.38 is: 16,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.62 : 29,685.03 = 11,951.38 : x
  2. Step 2: Convert to fraction form
    21,510.62/29,685.03 = 11,951.38/x
  3. Step 3: Cross multiply
    21,510.62x = 29,685.03 × 11,951.38
  4. Step 4: Simplify right side
    21,510.62x = 354,777,133.36
  5. Step 5: Solve for x
    x = 354,777,133.36/21,510.62
  6. Step 6: Final answer
    x = 16,493.12

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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.