Home / 20,535,771.30-28,330,466.45-12,382,479.78

Finding the Fourth Proportional to 20,535,771.30, 28,330,466.45 and 12,382,479.78

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Solution

The fourth proportional to 20,535,771.30, 28,330,466.45 and 12,382,479.78 is: 17,082,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,771.30 : 28,330,466.45 = 12,382,479.78 : x
  2. Step 2: Convert to fraction form
    20,535,771.30/28,330,466.45 = 12,382,479.78/x
  3. Step 3: Cross multiply
    20,535,771.30x = 28,330,466.45 × 12,382,479.78
  4. Step 4: Simplify right side
    20,535,771.30x = 350,801,427,975,093.38
  5. Step 5: Solve for x
    x = 350,801,427,975,093.38/20,535,771.30
  6. Step 6: Final answer
    x = 17,082,456.89

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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.