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Finding the Fourth Proportional to 8,729.52, 13,064.04 and 8,366.64

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Solution

The fourth proportional to 8,729.52, 13,064.04 and 8,366.64 is: 12,520.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.52 : 13,064.04 = 8,366.64 : x
  2. Step 2: Convert to fraction form
    8,729.52/13,064.04 = 8,366.64/x
  3. Step 3: Cross multiply
    8,729.52x = 13,064.04 × 8,366.64
  4. Step 4: Simplify right side
    8,729.52x = 109,302,119.63
  5. Step 5: Solve for x
    x = 109,302,119.63/8,729.52
  6. Step 6: Final answer
    x = 12,520.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.