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Finding the Fourth Proportional to 18,666.90, 28,000.35 and 10,793.70

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Solution

The fourth proportional to 18,666.90, 28,000.35 and 10,793.70 is: 16,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.90 : 28,000.35 = 10,793.70 : x
  2. Step 2: Convert to fraction form
    18,666.90/28,000.35 = 10,793.70/x
  3. Step 3: Cross multiply
    18,666.90x = 28,000.35 × 10,793.70
  4. Step 4: Simplify right side
    18,666.90x = 302,227,377.80
  5. Step 5: Solve for x
    x = 302,227,377.80/18,666.90
  6. Step 6: Final answer
    x = 16,190.55

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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.