Home / 12,948,686.36-17,869,188.22-7,147,469.72

Finding the Fourth Proportional to 12,948,686.36, 17,869,188.22 and 7,147,469.72

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Solution

The fourth proportional to 12,948,686.36, 17,869,188.22 and 7,147,469.72 is: 9,863,508.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948,686.36 : 17,869,188.22 = 7,147,469.72 : x
  2. Step 2: Convert to fraction form
    12,948,686.36/17,869,188.22 = 7,147,469.72/x
  3. Step 3: Cross multiply
    12,948,686.36x = 17,869,188.22 × 7,147,469.72
  4. Step 4: Simplify right side
    12,948,686.36x = 127,719,481,723,430.69
  5. Step 5: Solve for x
    x = 127,719,481,723,430.69/12,948,686.36
  6. Step 6: Final answer
    x = 9,863,508.79

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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.