Home / 12,981,330.78-17,914,083.03-7,179,657.18

Finding the Fourth Proportional to 12,981,330.78, 17,914,083.03 and 7,179,657.18

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Solution

The fourth proportional to 12,981,330.78, 17,914,083.03 and 7,179,657.18 is: 9,907,842.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981,330.78 : 17,914,083.03 = 7,179,657.18 : x
  2. Step 2: Convert to fraction form
    12,981,330.78/17,914,083.03 = 7,179,657.18/x
  3. Step 3: Cross multiply
    12,981,330.78x = 17,914,083.03 × 7,179,657.18
  4. Step 4: Simplify right side
    12,981,330.78x = 128,616,974,849,455.66
  5. Step 5: Solve for x
    x = 128,616,974,849,455.66/12,981,330.78
  6. Step 6: Final answer
    x = 9,907,842.04

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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.