Home / 21,406,865.78-29,541,691.05-11,617,394.51

Finding the Fourth Proportional to 21,406,865.78, 29,541,691.05 and 11,617,394.51

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Solution

The fourth proportional to 21,406,865.78, 29,541,691.05 and 11,617,394.51 is: 16,032,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406,865.78 : 29,541,691.05 = 11,617,394.51 : x
  2. Step 2: Convert to fraction form
    21,406,865.78/29,541,691.05 = 11,617,394.51/x
  3. Step 3: Cross multiply
    21,406,865.78x = 29,541,691.05 × 11,617,394.51
  4. Step 4: Simplify right side
    21,406,865.78x = 343,197,479,420,386.12
  5. Step 5: Solve for x
    x = 343,197,479,420,386.12/21,406,865.78
  6. Step 6: Final answer
    x = 16,032,121.79

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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.