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Finding the Fourth Proportional to 15,793.70, 23,678.40 and 8,868.20

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Solution

The fourth proportional to 15,793.70, 23,678.40 and 8,868.20 is: 13,295.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.70 : 23,678.40 = 8,868.20 : x
  2. Step 2: Convert to fraction form
    15,793.70/23,678.40 = 8,868.20/x
  3. Step 3: Cross multiply
    15,793.70x = 23,678.40 × 8,868.20
  4. Step 4: Simplify right side
    15,793.70x = 209,984,786.88
  5. Step 5: Solve for x
    x = 209,984,786.88/15,793.70
  6. Step 6: Final answer
    x = 13,295.48

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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.