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Finding the Fourth Proportional to 12,402.79, 17,115.77 and 6,737.58

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Solution

The fourth proportional to 12,402.79, 17,115.77 and 6,737.58 is: 9,297.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.79 : 17,115.77 = 6,737.58 : x
  2. Step 2: Convert to fraction form
    12,402.79/17,115.77 = 6,737.58/x
  3. Step 3: Cross multiply
    12,402.79x = 17,115.77 × 6,737.58
  4. Step 4: Simplify right side
    12,402.79x = 115,318,886.48
  5. Step 5: Solve for x
    x = 115,318,886.48/12,402.79
  6. Step 6: Final answer
    x = 9,297.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.