Home / 20,882.60-31,259.10-18,549.80

Finding the Fourth Proportional to 20,882.60, 31,259.10 and 18,549.80

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Solution

The fourth proportional to 20,882.60, 31,259.10 and 18,549.80 is: 27,767.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.60 : 31,259.10 = 18,549.80 : x
  2. Step 2: Convert to fraction form
    20,882.60/31,259.10 = 18,549.80/x
  3. Step 3: Cross multiply
    20,882.60x = 31,259.10 × 18,549.80
  4. Step 4: Simplify right side
    20,882.60x = 579,850,053.18
  5. Step 5: Solve for x
    x = 579,850,053.18/20,882.60
  6. Step 6: Final answer
    x = 27,767.14

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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.