Home / 15,304,460.64-21,121,110.84-8,428,940.88

Finding the Fourth Proportional to 15,304,460.64, 21,121,110.84 and 8,428,940.88

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Solution

The fourth proportional to 15,304,460.64, 21,121,110.84 and 8,428,940.88 is: 11,632,464.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304,460.64 : 21,121,110.84 = 8,428,940.88 : x
  2. Step 2: Convert to fraction form
    15,304,460.64/21,121,110.84 = 8,428,940.88/x
  3. Step 3: Cross multiply
    15,304,460.64x = 21,121,110.84 × 8,428,940.88
  4. Step 4: Simplify right side
    15,304,460.64x = 178,028,594,590,287.16
  5. Step 5: Solve for x
    x = 178,028,594,590,287.16/15,304,460.64
  6. Step 6: Final answer
    x = 11,632,464.47

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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.