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Finding the Fourth Proportional to 17,141.60, 25,693.20 and 8,818.40

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Solution

The fourth proportional to 17,141.60, 25,693.20 and 8,818.40 is: 13,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,141.60 : 25,693.20 = 8,818.40 : x
  2. Step 2: Convert to fraction form
    17,141.60/25,693.20 = 8,818.40/x
  3. Step 3: Cross multiply
    17,141.60x = 25,693.20 × 8,818.40
  4. Step 4: Simplify right side
    17,141.60x = 226,572,914.88
  5. Step 5: Solve for x
    x = 226,572,914.88/17,141.60
  6. Step 6: Final answer
    x = 13,217.72

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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.