Home / 21,136.17-31,706.06-5,553.75

Finding the Fourth Proportional to 21,136.17, 31,706.06 and 5,553.75

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Solution

The fourth proportional to 21,136.17, 31,706.06 and 5,553.75 is: 8,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.17 : 31,706.06 = 5,553.75 : x
  2. Step 2: Convert to fraction form
    21,136.17/31,706.06 = 5,553.75/x
  3. Step 3: Cross multiply
    21,136.17x = 31,706.06 × 5,553.75
  4. Step 4: Simplify right side
    21,136.17x = 176,087,502.96
  5. Step 5: Solve for x
    x = 176,087,502.96/21,136.17
  6. Step 6: Final answer
    x = 8,331.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.