Home / 20,440.88-28,210.75-11,367.14

Finding the Fourth Proportional to 20,440.88, 28,210.75 and 11,367.14

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Solution

The fourth proportional to 20,440.88, 28,210.75 and 11,367.14 is: 15,687.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.88 : 28,210.75 = 11,367.14 : x
  2. Step 2: Convert to fraction form
    20,440.88/28,210.75 = 11,367.14/x
  3. Step 3: Cross multiply
    20,440.88x = 28,210.75 × 11,367.14
  4. Step 4: Simplify right side
    20,440.88x = 320,675,586.86
  5. Step 5: Solve for x
    x = 320,675,586.86/20,440.88
  6. Step 6: Final answer
    x = 15,687.96

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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.