Home / 18,636.12-25,711.56-12,657.42

Finding the Fourth Proportional to 18,636.12, 25,711.56 and 12,657.42

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Solution

The fourth proportional to 18,636.12, 25,711.56 and 12,657.42 is: 17,462.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.12 : 25,711.56 = 12,657.42 : x
  2. Step 2: Convert to fraction form
    18,636.12/25,711.56 = 12,657.42/x
  3. Step 3: Cross multiply
    18,636.12x = 25,711.56 × 12,657.42
  4. Step 4: Simplify right side
    18,636.12x = 325,442,013.78
  5. Step 5: Solve for x
    x = 325,442,013.78/18,636.12
  6. Step 6: Final answer
    x = 17,462.97

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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.