Home / 28,758.55-43,134.15-21,373.78

Finding the Fourth Proportional to 28,758.55, 43,134.15 and 21,373.78

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Solution

The fourth proportional to 28,758.55, 43,134.15 and 21,373.78 is: 32,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.55 : 43,134.15 = 21,373.78 : x
  2. Step 2: Convert to fraction form
    28,758.55/43,134.15 = 21,373.78/x
  3. Step 3: Cross multiply
    28,758.55x = 43,134.15 × 21,373.78
  4. Step 4: Simplify right side
    28,758.55x = 921,939,832.59
  5. Step 5: Solve for x
    x = 921,939,832.59/28,758.55
  6. Step 6: Final answer
    x = 32,057.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.