Home / 20,451.02-28,222.23-11,498.57

Finding the Fourth Proportional to 20,451.02, 28,222.23 and 11,498.57

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Solution

The fourth proportional to 20,451.02, 28,222.23 and 11,498.57 is: 15,867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.02 : 28,222.23 = 11,498.57 : x
  2. Step 2: Convert to fraction form
    20,451.02/28,222.23 = 11,498.57/x
  3. Step 3: Cross multiply
    20,451.02x = 28,222.23 × 11,498.57
  4. Step 4: Simplify right side
    20,451.02x = 324,515,146.10
  5. Step 5: Solve for x
    x = 324,515,146.10/20,451.02
  6. Step 6: Final answer
    x = 15,867.92

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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.