Home / 19,915.10-29,917.20-16,634.60

Finding the Fourth Proportional to 19,915.10, 29,917.20 and 16,634.60

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Solution

The fourth proportional to 19,915.10, 29,917.20 and 16,634.60 is: 24,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.10 : 29,917.20 = 16,634.60 : x
  2. Step 2: Convert to fraction form
    19,915.10/29,917.20 = 16,634.60/x
  3. Step 3: Cross multiply
    19,915.10x = 29,917.20 × 16,634.60
  4. Step 4: Simplify right side
    19,915.10x = 497,660,655.12
  5. Step 5: Solve for x
    x = 497,660,655.12/19,915.10
  6. Step 6: Final answer
    x = 24,989.11

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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.