Home / 20,581.48-30,872.24-4,999.12

Finding the Fourth Proportional to 20,581.48, 30,872.24 and 4,999.12

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Solution

The fourth proportional to 20,581.48, 30,872.24 and 4,999.12 is: 7,498.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.48 : 30,872.24 = 4,999.12 : x
  2. Step 2: Convert to fraction form
    20,581.48/30,872.24 = 4,999.12/x
  3. Step 3: Cross multiply
    20,581.48x = 30,872.24 × 4,999.12
  4. Step 4: Simplify right side
    20,581.48x = 154,334,032.43
  5. Step 5: Solve for x
    x = 154,334,032.43/20,581.48
  6. Step 6: Final answer
    x = 7,498.68

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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.