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Finding the Fourth Proportional to 18,915.50, 26,104.20 and 10,532

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Solution

The fourth proportional to 18,915.50, 26,104.20 and 10,532 is: 14,534.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.50 : 26,104.20 = 10,532 : x
  2. Step 2: Convert to fraction form
    18,915.50/26,104.20 = 10,532/x
  3. Step 3: Cross multiply
    18,915.50x = 26,104.20 × 10,532
  4. Step 4: Simplify right side
    18,915.50x = 274,929,434.40
  5. Step 5: Solve for x
    x = 274,929,434.40/18,915.50
  6. Step 6: Final answer
    x = 14,534.61

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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.