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Finding the Fourth Proportional to 15,062.00, 20,784.08 and 8,689.17

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Solution

The fourth proportional to 15,062.00, 20,784.08 and 8,689.17 is: 11,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.00 : 20,784.08 = 8,689.17 : x
  2. Step 2: Convert to fraction form
    15,062.00/20,784.08 = 8,689.17/x
  3. Step 3: Cross multiply
    15,062.00x = 20,784.08 × 8,689.17
  4. Step 4: Simplify right side
    15,062.00x = 180,596,360.97
  5. Step 5: Solve for x
    x = 180,596,360.97/15,062.00
  6. Step 6: Final answer
    x = 11,990.20

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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.