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Finding the Fourth Proportional to 15,000.12, 20,695.50 and 8,708.04

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Solution

The fourth proportional to 15,000.12, 20,695.50 and 8,708.04 is: 12,014.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.12 : 20,695.50 = 8,708.04 : x
  2. Step 2: Convert to fraction form
    15,000.12/20,695.50 = 8,708.04/x
  3. Step 3: Cross multiply
    15,000.12x = 20,695.50 × 8,708.04
  4. Step 4: Simplify right side
    15,000.12x = 180,217,241.82
  5. Step 5: Solve for x
    x = 180,217,241.82/15,000.12
  6. Step 6: Final answer
    x = 12,014.39

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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.