Home / 20,581.92-30,872.88-4,999.50

Finding the Fourth Proportional to 20,581.92, 30,872.88 and 4,999.50

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Solution

The fourth proportional to 20,581.92, 30,872.88 and 4,999.50 is: 7,499.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.92 : 30,872.88 = 4,999.50 : x
  2. Step 2: Convert to fraction form
    20,581.92/30,872.88 = 4,999.50/x
  3. Step 3: Cross multiply
    20,581.92x = 30,872.88 × 4,999.50
  4. Step 4: Simplify right side
    20,581.92x = 154,348,963.56
  5. Step 5: Solve for x
    x = 154,348,963.56/20,581.92
  6. Step 6: Final answer
    x = 7,499.25

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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.