Home / 28,877.20-43,320.16-12,237.30

Finding the Fourth Proportional to 28,877.20, 43,320.16 and 12,237.30

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Solution

The fourth proportional to 28,877.20, 43,320.16 and 12,237.30 is: 18,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,877.20 : 43,320.16 = 12,237.30 : x
  2. Step 2: Convert to fraction form
    28,877.20/43,320.16 = 12,237.30/x
  3. Step 3: Cross multiply
    28,877.20x = 43,320.16 × 12,237.30
  4. Step 4: Simplify right side
    28,877.20x = 530,121,793.97
  5. Step 5: Solve for x
    x = 530,121,793.97/28,877.20
  6. Step 6: Final answer
    x = 18,357.80

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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.