Home / 12,681,881.20-17,504,109.12-7,788,269.44

Finding the Fourth Proportional to 12,681,881.20, 17,504,109.12 and 7,788,269.44

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Solution

The fourth proportional to 12,681,881.20, 17,504,109.12 and 7,788,269.44 is: 10,749,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681,881.20 : 17,504,109.12 = 7,788,269.44 : x
  2. Step 2: Convert to fraction form
    12,681,881.20/17,504,109.12 = 7,788,269.44/x
  3. Step 3: Cross multiply
    12,681,881.20x = 17,504,109.12 × 7,788,269.44
  4. Step 4: Simplify right side
    12,681,881.20x = 136,326,718,133,721.31
  5. Step 5: Solve for x
    x = 136,326,718,133,721.31/12,681,881.20
  6. Step 6: Final answer
    x = 10,749,723.64

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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.