Home / 12,821,839.72-17,695,070.31-7,315,335.94

Finding the Fourth Proportional to 12,821,839.72, 17,695,070.31 and 7,315,335.94

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Solution

The fourth proportional to 12,821,839.72, 17,695,070.31 and 7,315,335.94 is: 10,095,695.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821,839.72 : 17,695,070.31 = 7,315,335.94 : x
  2. Step 2: Convert to fraction form
    12,821,839.72/17,695,070.31 = 7,315,335.94/x
  3. Step 3: Cross multiply
    12,821,839.72x = 17,695,070.31 × 7,315,335.94
  4. Step 4: Simplify right side
    12,821,839.72x = 129,445,383,774,788.97
  5. Step 5: Solve for x
    x = 129,445,383,774,788.97/12,821,839.72
  6. Step 6: Final answer
    x = 10,095,695.05

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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.