Home / 20,697.19-28,562.12-11,265.75

Finding the Fourth Proportional to 20,697.19, 28,562.12 and 11,265.75

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Solution

The fourth proportional to 20,697.19, 28,562.12 and 11,265.75 is: 15,546.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.19 : 28,562.12 = 11,265.75 : x
  2. Step 2: Convert to fraction form
    20,697.19/28,562.12 = 11,265.75/x
  3. Step 3: Cross multiply
    20,697.19x = 28,562.12 × 11,265.75
  4. Step 4: Simplify right side
    20,697.19x = 321,773,689.31
  5. Step 5: Solve for x
    x = 321,773,689.31/20,697.19
  6. Step 6: Final answer
    x = 15,546.74

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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.