Home / 20,620,559.72-28,453,209.12-11,917,051.49

Finding the Fourth Proportional to 20,620,559.72, 28,453,209.12 and 11,917,051.49

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Solution

The fourth proportional to 20,620,559.72, 28,453,209.12 and 11,917,051.49 is: 16,443,702.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620,559.72 : 28,453,209.12 = 11,917,051.49 : x
  2. Step 2: Convert to fraction form
    20,620,559.72/28,453,209.12 = 11,917,051.49/x
  3. Step 3: Cross multiply
    20,620,559.72x = 28,453,209.12 × 11,917,051.49
  4. Step 4: Simplify right side
    20,620,559.72x = 339,078,358,209,910.62
  5. Step 5: Solve for x
    x = 339,078,358,209,910.62/20,620,559.72
  6. Step 6: Final answer
    x = 16,443,702.92

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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.