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Finding the Fourth Proportional to 15,081.79, 20,815.02 and 8,707.10

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Solution

The fourth proportional to 15,081.79, 20,815.02 and 8,707.10 is: 12,017.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.79 : 20,815.02 = 8,707.10 : x
  2. Step 2: Convert to fraction form
    15,081.79/20,815.02 = 8,707.10/x
  3. Step 3: Cross multiply
    15,081.79x = 20,815.02 × 8,707.10
  4. Step 4: Simplify right side
    15,081.79x = 181,238,507.70
  5. Step 5: Solve for x
    x = 181,238,507.70/15,081.79
  6. Step 6: Final answer
    x = 12,017.04

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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.