Home / 20,461.57-28,233.43-11,508.37

Finding the Fourth Proportional to 20,461.57, 28,233.43 and 11,508.37

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Solution

The fourth proportional to 20,461.57, 28,233.43 and 11,508.37 is: 15,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.57 : 28,233.43 = 11,508.37 : x
  2. Step 2: Convert to fraction form
    20,461.57/28,233.43 = 11,508.37/x
  3. Step 3: Cross multiply
    20,461.57x = 28,233.43 × 11,508.37
  4. Step 4: Simplify right side
    20,461.57x = 324,920,758.81
  5. Step 5: Solve for x
    x = 324,920,758.81/20,461.57
  6. Step 6: Final answer
    x = 15,879.56

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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.