Home / 12,269,321.76-16,931,731.20-7,115,738.88

Finding the Fourth Proportional to 12,269,321.76, 16,931,731.20 and 7,115,738.88

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Solution

The fourth proportional to 12,269,321.76, 16,931,731.20 and 7,115,738.88 is: 9,819,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269,321.76 : 16,931,731.20 = 7,115,738.88 : x
  2. Step 2: Convert to fraction form
    12,269,321.76/16,931,731.20 = 7,115,738.88/x
  3. Step 3: Cross multiply
    12,269,321.76x = 16,931,731.20 × 7,115,738.88
  4. Step 4: Simplify right side
    12,269,321.76x = 120,481,778,005,549.05
  5. Step 5: Solve for x
    x = 120,481,778,005,549.05/12,269,321.76
  6. Step 6: Final answer
    x = 9,819,758.61

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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.