Home / 20,287.76-27,989.33-12,327.08

Finding the Fourth Proportional to 20,287.76, 27,989.33 and 12,327.08

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Solution

The fourth proportional to 20,287.76, 27,989.33 and 12,327.08 is: 17,006.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.76 : 27,989.33 = 12,327.08 : x
  2. Step 2: Convert to fraction form
    20,287.76/27,989.33 = 12,327.08/x
  3. Step 3: Cross multiply
    20,287.76x = 27,989.33 × 12,327.08
  4. Step 4: Simplify right side
    20,287.76x = 345,026,508.47
  5. Step 5: Solve for x
    x = 345,026,508.47/20,287.76
  6. Step 6: Final answer
    x = 17,006.64

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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.