Home / 22,549.68-31,127.28-20,187.72

Finding the Fourth Proportional to 22,549.68, 31,127.28 and 20,187.72

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Solution

The fourth proportional to 22,549.68, 31,127.28 and 20,187.72 is: 27,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,549.68 : 31,127.28 = 20,187.72 : x
  2. Step 2: Convert to fraction form
    22,549.68/31,127.28 = 20,187.72/x
  3. Step 3: Cross multiply
    22,549.68x = 31,127.28 × 20,187.72
  4. Step 4: Simplify right side
    22,549.68x = 628,388,813.00
  5. Step 5: Solve for x
    x = 628,388,813.00/22,549.68
  6. Step 6: Final answer
    x = 27,866.86

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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.