Home / 20,882.72-28,818.31-11,451.29

Finding the Fourth Proportional to 20,882.72, 28,818.31 and 11,451.29

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Solution

The fourth proportional to 20,882.72, 28,818.31 and 11,451.29 is: 15,802.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.72 : 28,818.31 = 11,451.29 : x
  2. Step 2: Convert to fraction form
    20,882.72/28,818.31 = 11,451.29/x
  3. Step 3: Cross multiply
    20,882.72x = 28,818.31 × 11,451.29
  4. Step 4: Simplify right side
    20,882.72x = 330,006,652.40
  5. Step 5: Solve for x
    x = 330,006,652.40/20,882.72
  6. Step 6: Final answer
    x = 15,802.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.