Home / 20,569.80-28,387.98-11,619.48

Finding the Fourth Proportional to 20,569.80, 28,387.98 and 11,619.48

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Solution

The fourth proportional to 20,569.80, 28,387.98 and 11,619.48 is: 16,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.80 : 28,387.98 = 11,619.48 : x
  2. Step 2: Convert to fraction form
    20,569.80/28,387.98 = 11,619.48/x
  3. Step 3: Cross multiply
    20,569.80x = 28,387.98 × 11,619.48
  4. Step 4: Simplify right side
    20,569.80x = 329,853,565.85
  5. Step 5: Solve for x
    x = 329,853,565.85/20,569.80
  6. Step 6: Final answer
    x = 16,035.82

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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.