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Finding the Fourth Proportional to 23,754.87, 32,780.36 and 13,143.87

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Solution

The fourth proportional to 23,754.87, 32,780.36 and 13,143.87 is: 18,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,754.87 : 32,780.36 = 13,143.87 : x
  2. Step 2: Convert to fraction form
    23,754.87/32,780.36 = 13,143.87/x
  3. Step 3: Cross multiply
    23,754.87x = 32,780.36 × 13,143.87
  4. Step 4: Simplify right side
    23,754.87x = 430,860,823.25
  5. Step 5: Solve for x
    x = 430,860,823.25/23,754.87
  6. Step 6: Final answer
    x = 18,137.79

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1.5x scale

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.