Home / 20,760.03-28,648.08-11,328.39

Finding the Fourth Proportional to 20,760.03, 28,648.08 and 11,328.39

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Solution

The fourth proportional to 20,760.03, 28,648.08 and 11,328.39 is: 15,632.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.03 : 28,648.08 = 11,328.39 : x
  2. Step 2: Convert to fraction form
    20,760.03/28,648.08 = 11,328.39/x
  3. Step 3: Cross multiply
    20,760.03x = 28,648.08 × 11,328.39
  4. Step 4: Simplify right side
    20,760.03x = 324,536,622.99
  5. Step 5: Solve for x
    x = 324,536,622.99/20,760.03
  6. Step 6: Final answer
    x = 15,632.76

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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.