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Finding the Fourth Proportional to 12,569.79, 17,345.84 and 6,981.15

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Solution

The fourth proportional to 12,569.79, 17,345.84 and 6,981.15 is: 9,633.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,569.79 : 17,345.84 = 6,981.15 : x
  2. Step 2: Convert to fraction form
    12,569.79/17,345.84 = 6,981.15/x
  3. Step 3: Cross multiply
    12,569.79x = 17,345.84 × 6,981.15
  4. Step 4: Simplify right side
    12,569.79x = 121,093,876.01
  5. Step 5: Solve for x
    x = 121,093,876.01/12,569.79
  6. Step 6: Final answer
    x = 9,633.72

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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.