Home / 20,579.11-30,862.56-8,732.72

Finding the Fourth Proportional to 20,579.11, 30,862.56 and 8,732.72

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Solution

The fourth proportional to 20,579.11, 30,862.56 and 8,732.72 is: 13,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.11 : 30,862.56 = 8,732.72 : x
  2. Step 2: Convert to fraction form
    20,579.11/30,862.56 = 8,732.72/x
  3. Step 3: Cross multiply
    20,579.11x = 30,862.56 × 8,732.72
  4. Step 4: Simplify right side
    20,579.11x = 269,514,094.96
  5. Step 5: Solve for x
    x = 269,514,094.96/20,579.11
  6. Step 6: Final answer
    x = 13,096.49

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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.