Home / 20,499.38-28,291.28-12,546.90

Finding the Fourth Proportional to 20,499.38, 28,291.28 and 12,546.90

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Solution

The fourth proportional to 20,499.38, 28,291.28 and 12,546.90 is: 17,316.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.38 : 28,291.28 = 12,546.90 : x
  2. Step 2: Convert to fraction form
    20,499.38/28,291.28 = 12,546.90/x
  3. Step 3: Cross multiply
    20,499.38x = 28,291.28 × 12,546.90
  4. Step 4: Simplify right side
    20,499.38x = 354,967,798.30
  5. Step 5: Solve for x
    x = 354,967,798.30/20,499.38
  6. Step 6: Final answer
    x = 17,316.03

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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.