Home / 20,110.70-30,166.05-12,691.10

Finding the Fourth Proportional to 20,110.70, 30,166.05 and 12,691.10

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Solution

The fourth proportional to 20,110.70, 30,166.05 and 12,691.10 is: 19,036.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.70 : 30,166.05 = 12,691.10 : x
  2. Step 2: Convert to fraction form
    20,110.70/30,166.05 = 12,691.10/x
  3. Step 3: Cross multiply
    20,110.70x = 30,166.05 × 12,691.10
  4. Step 4: Simplify right side
    20,110.70x = 382,840,357.16
  5. Step 5: Solve for x
    x = 382,840,357.16/20,110.70
  6. Step 6: Final answer
    x = 19,036.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.