Home / 19,943.76-29,909.16-9,412.32

Finding the Fourth Proportional to 19,943.76, 29,909.16 and 9,412.32

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Solution

The fourth proportional to 19,943.76, 29,909.16 and 9,412.32 is: 14,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.76 : 29,909.16 = 9,412.32 : x
  2. Step 2: Convert to fraction form
    19,943.76/29,909.16 = 9,412.32/x
  3. Step 3: Cross multiply
    19,943.76x = 29,909.16 × 9,412.32
  4. Step 4: Simplify right side
    19,943.76x = 281,514,584.85
  5. Step 5: Solve for x
    x = 281,514,584.85/19,943.76
  6. Step 6: Final answer
    x = 14,115.42

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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.