Home / 18,118.70-25,012.35-12,154.26

Finding the Fourth Proportional to 18,118.70, 25,012.35 and 12,154.26

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Solution

The fourth proportional to 18,118.70, 25,012.35 and 12,154.26 is: 16,778.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.70 : 25,012.35 = 12,154.26 : x
  2. Step 2: Convert to fraction form
    18,118.70/25,012.35 = 12,154.26/x
  3. Step 3: Cross multiply
    18,118.70x = 25,012.35 × 12,154.26
  4. Step 4: Simplify right side
    18,118.70x = 304,006,605.11
  5. Step 5: Solve for x
    x = 304,006,605.11/18,118.70
  6. Step 6: Final answer
    x = 16,778.61

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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.