Home / 47,997.74-71,988.41-12,929.20

Finding the Fourth Proportional to 47,997.74, 71,988.41 and 12,929.20

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Solution

The fourth proportional to 47,997.74, 71,988.41 and 12,929.20 is: 19,391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,997.74 : 71,988.41 = 12,929.20 : x
  2. Step 2: Convert to fraction form
    47,997.74/71,988.41 = 12,929.20/x
  3. Step 3: Cross multiply
    47,997.74x = 71,988.41 × 12,929.20
  4. Step 4: Simplify right side
    47,997.74x = 930,752,125.98
  5. Step 5: Solve for x
    x = 930,752,125.98/47,997.74
  6. Step 6: Final answer
    x = 19,391.58

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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.