Home / 15,304,159.33-21,120,694.31-8,428,639.57

Finding the Fourth Proportional to 15,304,159.33, 21,120,694.31 and 8,428,639.57

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Solution

The fourth proportional to 15,304,159.33, 21,120,694.31 and 8,428,639.57 is: 11,632,048.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304,159.33 : 21,120,694.31 = 8,428,639.57 : x
  2. Step 2: Convert to fraction form
    15,304,159.33/21,120,694.31 = 8,428,639.57/x
  3. Step 3: Cross multiply
    15,304,159.33x = 21,120,694.31 × 8,428,639.57
  4. Step 4: Simplify right side
    15,304,159.33x = 178,018,719,775,409.72
  5. Step 5: Solve for x
    x = 178,018,719,775,409.72/15,304,159.33
  6. Step 6: Final answer
    x = 11,632,048.25

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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.