Home / 21,650.85-29,874.98-13,148.55

Finding the Fourth Proportional to 21,650.85, 29,874.98 and 13,148.55

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Solution

The fourth proportional to 21,650.85, 29,874.98 and 13,148.55 is: 18,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,650.85 : 29,874.98 = 13,148.55 : x
  2. Step 2: Convert to fraction form
    21,650.85/29,874.98 = 13,148.55/x
  3. Step 3: Cross multiply
    21,650.85x = 29,874.98 × 13,148.55
  4. Step 4: Simplify right side
    21,650.85x = 392,812,602.54
  5. Step 5: Solve for x
    x = 392,812,602.54/21,650.85
  6. Step 6: Final answer
    x = 18,143.06

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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.