Home / 13,218,087.72-18,241,108.11-7,338,119.52

Finding the Fourth Proportional to 13,218,087.72, 18,241,108.11 and 7,338,119.52

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Solution

The fourth proportional to 13,218,087.72, 18,241,108.11 and 7,338,119.52 is: 10,126,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218,087.72 : 18,241,108.11 = 7,338,119.52 : x
  2. Step 2: Convert to fraction form
    13,218,087.72/18,241,108.11 = 7,338,119.52/x
  3. Step 3: Cross multiply
    13,218,087.72x = 18,241,108.11 × 7,338,119.52
  4. Step 4: Simplify right side
    13,218,087.72x = 133,855,431,488,421.30
  5. Step 5: Solve for x
    x = 133,855,431,488,421.30/13,218,087.72
  6. Step 6: Final answer
    x = 10,126,686.58

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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.