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Finding the Fourth Proportional to 12,854,401.88, 17,739,630.02 and 7,696,778.68

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Solution

The fourth proportional to 12,854,401.88, 17,739,630.02 and 7,696,778.68 is: 10,621,887.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854,401.88 : 17,739,630.02 = 7,696,778.68 : x
  2. Step 2: Convert to fraction form
    12,854,401.88/17,739,630.02 = 7,696,778.68/x
  3. Step 3: Cross multiply
    12,854,401.88x = 17,739,630.02 × 7,696,778.68
  4. Step 4: Simplify right side
    12,854,401.88x = 136,538,006,129,023.97
  5. Step 5: Solve for x
    x = 136,538,006,129,023.97/12,854,401.88
  6. Step 6: Final answer
    x = 10,621,887.15

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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.