Home / 20,559.99-28,371.20-11,608.38

Finding the Fourth Proportional to 20,559.99, 28,371.20 and 11,608.38

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Solution

The fourth proportional to 20,559.99, 28,371.20 and 11,608.38 is: 16,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.99 : 28,371.20 = 11,608.38 : x
  2. Step 2: Convert to fraction form
    20,559.99/28,371.20 = 11,608.38/x
  3. Step 3: Cross multiply
    20,559.99x = 28,371.20 × 11,608.38
  4. Step 4: Simplify right side
    20,559.99x = 329,343,677.91
  5. Step 5: Solve for x
    x = 329,343,677.91/20,559.99
  6. Step 6: Final answer
    x = 16,018.67

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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.