Home / 20,220.68-27,901.20-11,266.16

Finding the Fourth Proportional to 20,220.68, 27,901.20 and 11,266.16

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Solution

The fourth proportional to 20,220.68, 27,901.20 and 11,266.16 is: 15,545.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.68 : 27,901.20 = 11,266.16 : x
  2. Step 2: Convert to fraction form
    20,220.68/27,901.20 = 11,266.16/x
  3. Step 3: Cross multiply
    20,220.68x = 27,901.20 × 11,266.16
  4. Step 4: Simplify right side
    20,220.68x = 314,339,243.89
  5. Step 5: Solve for x
    x = 314,339,243.89/20,220.68
  6. Step 6: Final answer
    x = 15,545.44

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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.