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Finding the Fourth Proportional to 8,730.65, 13,032.60 and 8,080.16

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Solution

The fourth proportional to 8,730.65, 13,032.60 and 8,080.16 is: 12,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730.65 : 13,032.60 = 8,080.16 : x
  2. Step 2: Convert to fraction form
    8,730.65/13,032.60 = 8,080.16/x
  3. Step 3: Cross multiply
    8,730.65x = 13,032.60 × 8,080.16
  4. Step 4: Simplify right side
    8,730.65x = 105,305,397.75
  5. Step 5: Solve for x
    x = 105,305,397.75/8,730.65
  6. Step 6: Final answer
    x = 12,061.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.