Home / 20,535,770.80-28,330,465.76-12,382,479.28

Finding the Fourth Proportional to 20,535,770.80, 28,330,465.76 and 12,382,479.28

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Solution

The fourth proportional to 20,535,770.80, 28,330,465.76 and 12,382,479.28 is: 17,082,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,770.80 : 28,330,465.76 = 12,382,479.28 : x
  2. Step 2: Convert to fraction form
    20,535,770.80/28,330,465.76 = 12,382,479.28/x
  3. Step 3: Cross multiply
    20,535,770.80x = 28,330,465.76 × 12,382,479.28
  4. Step 4: Simplify right side
    20,535,770.80x = 350,801,405,265,949.44
  5. Step 5: Solve for x
    x = 350,801,405,265,949.44/20,535,770.80
  6. Step 6: Final answer
    x = 17,082,456.20

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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.