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Finding the Fourth Proportional to 15,052.63, 20,772.21 and 8,679.10

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Solution

The fourth proportional to 15,052.63, 20,772.21 and 8,679.10 is: 11,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,052.63 : 20,772.21 = 8,679.10 : x
  2. Step 2: Convert to fraction form
    15,052.63/20,772.21 = 8,679.10/x
  3. Step 3: Cross multiply
    15,052.63x = 20,772.21 × 8,679.10
  4. Step 4: Simplify right side
    15,052.63x = 180,284,087.81
  5. Step 5: Solve for x
    x = 180,284,087.81/15,052.63
  6. Step 6: Final answer
    x = 11,976.92

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1.5x scale

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.