Home / 20,116.89-30,176.15-9,581.49

Finding the Fourth Proportional to 20,116.89, 30,176.15 and 9,581.49

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Solution

The fourth proportional to 20,116.89, 30,176.15 and 9,581.49 is: 14,372.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.89 : 30,176.15 = 9,581.49 : x
  2. Step 2: Convert to fraction form
    20,116.89/30,176.15 = 9,581.49/x
  3. Step 3: Cross multiply
    20,116.89x = 30,176.15 × 9,581.49
  4. Step 4: Simplify right side
    20,116.89x = 289,132,431.56
  5. Step 5: Solve for x
    x = 289,132,431.56/20,116.89
  6. Step 6: Final answer
    x = 14,372.62

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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.