Home / 20,761.74-28,651.50-11,330.10

Finding the Fourth Proportional to 20,761.74, 28,651.50 and 11,330.10

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Solution

The fourth proportional to 20,761.74, 28,651.50 and 11,330.10 is: 15,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.74 : 28,651.50 = 11,330.10 : x
  2. Step 2: Convert to fraction form
    20,761.74/28,651.50 = 11,330.10/x
  3. Step 3: Cross multiply
    20,761.74x = 28,651.50 × 11,330.10
  4. Step 4: Simplify right side
    20,761.74x = 324,624,360.15
  5. Step 5: Solve for x
    x = 324,624,360.15/20,761.74
  6. Step 6: Final answer
    x = 15,635.70

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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.