Home / 15,909.78-23,862.80-4,223.90

Finding the Fourth Proportional to 15,909.78, 23,862.80 and 4,223.90

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Solution

The fourth proportional to 15,909.78, 23,862.80 and 4,223.90 is: 6,335.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.78 : 23,862.80 = 4,223.90 : x
  2. Step 2: Convert to fraction form
    15,909.78/23,862.80 = 4,223.90/x
  3. Step 3: Cross multiply
    15,909.78x = 23,862.80 × 4,223.90
  4. Step 4: Simplify right side
    15,909.78x = 100,794,080.92
  5. Step 5: Solve for x
    x = 100,794,080.92/15,909.78
  6. Step 6: Final answer
    x = 6,335.35

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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.