Home / 20,948,729.19-28,904,913.64-12,245,218.23

Finding the Fourth Proportional to 20,948,729.19, 28,904,913.64 and 12,245,218.23

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Solution

The fourth proportional to 20,948,729.19, 28,904,913.64 and 12,245,218.23 is: 16,895,868.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948,729.19 : 28,904,913.64 = 12,245,218.23 : x
  2. Step 2: Convert to fraction form
    20,948,729.19/28,904,913.64 = 12,245,218.23/x
  3. Step 3: Cross multiply
    20,948,729.19x = 28,904,913.64 × 12,245,218.23
  4. Step 4: Simplify right side
    20,948,729.19x = 353,946,975,441,103.69
  5. Step 5: Solve for x
    x = 353,946,975,441,103.69/20,948,729.19
  6. Step 6: Final answer
    x = 16,895,868.59

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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.