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Finding the Fourth Proportional to 8,818.64, 13,195.02 and 8,720.24

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Solution

The fourth proportional to 8,818.64, 13,195.02 and 8,720.24 is: 13,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.64 : 13,195.02 = 8,720.24 : x
  2. Step 2: Convert to fraction form
    8,818.64/13,195.02 = 8,720.24/x
  3. Step 3: Cross multiply
    8,818.64x = 13,195.02 × 8,720.24
  4. Step 4: Simplify right side
    8,818.64x = 115,063,741.20
  5. Step 5: Solve for x
    x = 115,063,741.20/8,818.64
  6. Step 6: Final answer
    x = 13,047.79

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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.