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Finding the Fourth Proportional to 12,696,641.89, 17,521,468.74 and 6,895,465.15

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Solution

The fourth proportional to 12,696,641.89, 17,521,468.74 and 6,895,465.15 is: 9,515,797.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696,641.89 : 17,521,468.74 = 6,895,465.15 : x
  2. Step 2: Convert to fraction form
    12,696,641.89/17,521,468.74 = 6,895,465.15/x
  3. Step 3: Cross multiply
    12,696,641.89x = 17,521,468.74 × 6,895,465.15
  4. Step 4: Simplify right side
    12,696,641.89x = 120,818,677,073,484.41
  5. Step 5: Solve for x
    x = 120,818,677,073,484.41/12,696,641.89
  6. Step 6: Final answer
    x = 9,515,797.81

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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.