Home / 20,562.18-28,375.84-11,130.72

Finding the Fourth Proportional to 20,562.18, 28,375.84 and 11,130.72

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Solution

The fourth proportional to 20,562.18, 28,375.84 and 11,130.72 is: 15,360.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.18 : 28,375.84 = 11,130.72 : x
  2. Step 2: Convert to fraction form
    20,562.18/28,375.84 = 11,130.72/x
  3. Step 3: Cross multiply
    20,562.18x = 28,375.84 × 11,130.72
  4. Step 4: Simplify right side
    20,562.18x = 315,843,529.80
  5. Step 5: Solve for x
    x = 315,843,529.80/20,562.18
  6. Step 6: Final answer
    x = 15,360.41

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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.