Home / 18,517,521.74-27,663,656.45-11,987,398.89

Finding the Fourth Proportional to 18,517,521.74, 27,663,656.45 and 11,987,398.89

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Solution

The fourth proportional to 18,517,521.74, 27,663,656.45 and 11,987,398.89 is: 17,908,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517,521.74 : 27,663,656.45 = 11,987,398.89 : x
  2. Step 2: Convert to fraction form
    18,517,521.74/27,663,656.45 = 11,987,398.89/x
  3. Step 3: Cross multiply
    18,517,521.74x = 27,663,656.45 × 11,987,398.89
  4. Step 4: Simplify right side
    18,517,521.74x = 331,615,284,562,134.38
  5. Step 5: Solve for x
    x = 331,615,284,562,134.38/18,517,521.74
  6. Step 6: Final answer
    x = 17,908,189.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.