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Finding the Fourth Proportional to 18,725.88, 25,841.22 and 10,342.20

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Solution

The fourth proportional to 18,725.88, 25,841.22 and 10,342.20 is: 14,271.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.88 : 25,841.22 = 10,342.20 : x
  2. Step 2: Convert to fraction form
    18,725.88/25,841.22 = 10,342.20/x
  3. Step 3: Cross multiply
    18,725.88x = 25,841.22 × 10,342.20
  4. Step 4: Simplify right side
    18,725.88x = 267,255,065.48
  5. Step 5: Solve for x
    x = 267,255,065.48/18,725.88
  6. Step 6: Final answer
    x = 14,271.96

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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.