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Finding the Fourth Proportional to 15,014.03, 20,720.64 and 8,726

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Solution

The fourth proportional to 15,014.03, 20,720.64 and 8,726 is: 12,042.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.03 : 20,720.64 = 8,726 : x
  2. Step 2: Convert to fraction form
    15,014.03/20,720.64 = 8,726/x
  3. Step 3: Cross multiply
    15,014.03x = 20,720.64 × 8,726
  4. Step 4: Simplify right side
    15,014.03x = 180,808,304.64
  5. Step 5: Solve for x
    x = 180,808,304.64/15,014.03
  6. Step 6: Final answer
    x = 12,042.62

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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.