Home / 20,562.30-28,375.86-11,130.87

Finding the Fourth Proportional to 20,562.30, 28,375.86 and 11,130.87

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Solution

The fourth proportional to 20,562.30, 28,375.86 and 11,130.87 is: 15,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.30 : 28,375.86 = 11,130.87 : x
  2. Step 2: Convert to fraction form
    20,562.30/28,375.86 = 11,130.87/x
  3. Step 3: Cross multiply
    20,562.30x = 28,375.86 × 11,130.87
  4. Step 4: Simplify right side
    20,562.30x = 315,848,008.80
  5. Step 5: Solve for x
    x = 315,848,008.80/20,562.30
  6. Step 6: Final answer
    x = 15,360.54

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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.