Home / 20,669.50-28,524.10-11,238.10

Finding the Fourth Proportional to 20,669.50, 28,524.10 and 11,238.10

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Solution

The fourth proportional to 20,669.50, 28,524.10 and 11,238.10 is: 15,508.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.50 : 28,524.10 = 11,238.10 : x
  2. Step 2: Convert to fraction form
    20,669.50/28,524.10 = 11,238.10/x
  3. Step 3: Cross multiply
    20,669.50x = 28,524.10 × 11,238.10
  4. Step 4: Simplify right side
    20,669.50x = 320,556,688.21
  5. Step 5: Solve for x
    x = 320,556,688.21/20,669.50
  6. Step 6: Final answer
    x = 15,508.68

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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.