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Finding the Fourth Proportional to 15,503.78, 23,255.76 and 3,816.92

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Solution

The fourth proportional to 15,503.78, 23,255.76 and 3,816.92 is: 5,725.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.78 : 23,255.76 = 3,816.92 : x
  2. Step 2: Convert to fraction form
    15,503.78/23,255.76 = 3,816.92/x
  3. Step 3: Cross multiply
    15,503.78x = 23,255.76 × 3,816.92
  4. Step 4: Simplify right side
    15,503.78x = 88,765,375.46
  5. Step 5: Solve for x
    x = 88,765,375.46/15,503.78
  6. Step 6: Final answer
    x = 5,725.40

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1.5x scale

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.