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Finding the Fourth Proportional to 20,600.65, 30,882.76 and 8,907.49

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Solution

The fourth proportional to 20,600.65, 30,882.76 and 8,907.49 is: 13,353.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.65 : 30,882.76 = 8,907.49 : x
  2. Step 2: Convert to fraction form
    20,600.65/30,882.76 = 8,907.49/x
  3. Step 3: Cross multiply
    20,600.65x = 30,882.76 × 8,907.49
  4. Step 4: Simplify right side
    20,600.65x = 275,087,875.87
  5. Step 5: Solve for x
    x = 275,087,875.87/20,600.65
  6. Step 6: Final answer
    x = 13,353.36

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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.