Home / 28,909.20-43,363.80-13,357.20

Finding the Fourth Proportional to 28,909.20, 43,363.80 and 13,357.20

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Solution

The fourth proportional to 28,909.20, 43,363.80 and 13,357.20 is: 20,035.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.20 : 43,363.80 = 13,357.20 : x
  2. Step 2: Convert to fraction form
    28,909.20/43,363.80 = 13,357.20/x
  3. Step 3: Cross multiply
    28,909.20x = 43,363.80 × 13,357.20
  4. Step 4: Simplify right side
    28,909.20x = 579,218,949.36
  5. Step 5: Solve for x
    x = 579,218,949.36/28,909.20
  6. Step 6: Final answer
    x = 20,035.80

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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.