Home / 13,279,815.92-18,325,897.12-8,122,798.64

Finding the Fourth Proportional to 13,279,815.92, 18,325,897.12 and 8,122,798.64

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Solution

The fourth proportional to 13,279,815.92, 18,325,897.12 and 8,122,798.64 is: 11,209,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279,815.92 : 18,325,897.12 = 8,122,798.64 : x
  2. Step 2: Convert to fraction form
    13,279,815.92/18,325,897.12 = 8,122,798.64/x
  3. Step 3: Cross multiply
    13,279,815.92x = 18,325,897.12 × 8,122,798.64
  4. Step 4: Simplify right side
    13,279,815.92x = 148,857,572,203,115.91
  5. Step 5: Solve for x
    x = 148,857,572,203,115.91/13,279,815.92
  6. Step 6: Final answer
    x = 11,209,309.91

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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.