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Finding the Fourth Proportional to 20,294.80, 30,444.63 and 8,606.50

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Solution

The fourth proportional to 20,294.80, 30,444.63 and 8,606.50 is: 12,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.80 : 30,444.63 = 8,606.50 : x
  2. Step 2: Convert to fraction form
    20,294.80/30,444.63 = 8,606.50/x
  3. Step 3: Cross multiply
    20,294.80x = 30,444.63 × 8,606.50
  4. Step 4: Simplify right side
    20,294.80x = 262,021,708.10
  5. Step 5: Solve for x
    x = 262,021,708.10/20,294.80
  6. Step 6: Final answer
    x = 12,910.78

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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.