Home / 21,234,459.25-31,851,805.61-5,278,107.25

Finding the Fourth Proportional to 21,234,459.25, 31,851,805.61 and 5,278,107.25

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Solution

The fourth proportional to 21,234,459.25, 31,851,805.61 and 5,278,107.25 is: 7,917,189.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234,459.25 : 31,851,805.61 = 5,278,107.25 : x
  2. Step 2: Convert to fraction form
    21,234,459.25/31,851,805.61 = 5,278,107.25/x
  3. Step 3: Cross multiply
    21,234,459.25x = 31,851,805.61 × 5,278,107.25
  4. Step 4: Simplify right side
    21,234,459.25x = 168,117,246,115,731.66
  5. Step 5: Solve for x
    x = 168,117,246,115,731.66/21,234,459.25
  6. Step 6: Final answer
    x = 7,917,189.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.