Home / 13,489.02-20,231.28-4,126.86

Finding the Fourth Proportional to 13,489.02, 20,231.28 and 4,126.86

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Solution

The fourth proportional to 13,489.02, 20,231.28 and 4,126.86 is: 6,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.02 : 20,231.28 = 4,126.86 : x
  2. Step 2: Convert to fraction form
    13,489.02/20,231.28 = 4,126.86/x
  3. Step 3: Cross multiply
    13,489.02x = 20,231.28 × 4,126.86
  4. Step 4: Simplify right side
    13,489.02x = 83,491,660.18
  5. Step 5: Solve for x
    x = 83,491,660.18/13,489.02
  6. Step 6: Final answer
    x = 6,189.60

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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.