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Finding the Fourth Proportional to 15,818.70, 23,715.90 and 8,893.20

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Solution

The fourth proportional to 15,818.70, 23,715.90 and 8,893.20 is: 13,332.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.70 : 23,715.90 = 8,893.20 : x
  2. Step 2: Convert to fraction form
    15,818.70/23,715.90 = 8,893.20/x
  3. Step 3: Cross multiply
    15,818.70x = 23,715.90 × 8,893.20
  4. Step 4: Simplify right side
    15,818.70x = 210,910,241.88
  5. Step 5: Solve for x
    x = 210,910,241.88/15,818.70
  6. Step 6: Final answer
    x = 13,332.97

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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.