Home / 12,471,187.80-18,706,781.70-7,077,754.20

Finding the Fourth Proportional to 12,471,187.80, 18,706,781.70 and 7,077,754.20

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Solution

The fourth proportional to 12,471,187.80, 18,706,781.70 and 7,077,754.20 is: 10,616,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471,187.80 : 18,706,781.70 = 7,077,754.20 : x
  2. Step 2: Convert to fraction form
    12,471,187.80/18,706,781.70 = 7,077,754.20/x
  3. Step 3: Cross multiply
    12,471,187.80x = 18,706,781.70 × 7,077,754.20
  4. Step 4: Simplify right side
    12,471,187.80x = 132,402,002,745,658.14
  5. Step 5: Solve for x
    x = 132,402,002,745,658.14/12,471,187.80
  6. Step 6: Final answer
    x = 10,616,631.30

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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.