Home / 12,134,853.80-18,178,661.10-7,328,265.20

Finding the Fourth Proportional to 12,134,853.80, 18,178,661.10 and 7,328,265.20

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Solution

The fourth proportional to 12,134,853.80, 18,178,661.10 and 7,328,265.20 is: 10,978,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,134,853.80 : 18,178,661.10 = 7,328,265.20 : x
  2. Step 2: Convert to fraction form
    12,134,853.80/18,178,661.10 = 7,328,265.20/x
  3. Step 3: Cross multiply
    12,134,853.80x = 18,178,661.10 × 7,328,265.20
  4. Step 4: Simplify right side
    12,134,853.80x = 133,218,049,521,723.73
  5. Step 5: Solve for x
    x = 133,218,049,521,723.73/12,134,853.80
  6. Step 6: Final answer
    x = 10,978,133.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.