Home / 18,685.17-25,770.94-11,971.42

Finding the Fourth Proportional to 18,685.17, 25,770.94 and 11,971.42

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Solution

The fourth proportional to 18,685.17, 25,770.94 and 11,971.42 is: 16,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.17 : 25,770.94 = 11,971.42 : x
  2. Step 2: Convert to fraction form
    18,685.17/25,770.94 = 11,971.42/x
  3. Step 3: Cross multiply
    18,685.17x = 25,770.94 × 11,971.42
  4. Step 4: Simplify right side
    18,685.17x = 308,514,652.18
  5. Step 5: Solve for x
    x = 308,514,652.18/18,685.17
  6. Step 6: Final answer
    x = 16,511.20

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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.