Home / 19,640.07-29,456.87-8,543.88

Finding the Fourth Proportional to 19,640.07, 29,456.87 and 8,543.88

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Solution

The fourth proportional to 19,640.07, 29,456.87 and 8,543.88 is: 12,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.07 : 29,456.87 = 8,543.88 : x
  2. Step 2: Convert to fraction form
    19,640.07/29,456.87 = 8,543.88/x
  3. Step 3: Cross multiply
    19,640.07x = 29,456.87 × 8,543.88
  4. Step 4: Simplify right side
    19,640.07x = 251,675,919.74
  5. Step 5: Solve for x
    x = 251,675,919.74/19,640.07
  6. Step 6: Final answer
    x = 12,814.41

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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.