Home / 20,456.16-28,228.93-11,503.43

Finding the Fourth Proportional to 20,456.16, 28,228.93 and 11,503.43

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Solution

The fourth proportional to 20,456.16, 28,228.93 and 11,503.43 is: 15,874.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.16 : 28,228.93 = 11,503.43 : x
  2. Step 2: Convert to fraction form
    20,456.16/28,228.93 = 11,503.43/x
  3. Step 3: Cross multiply
    20,456.16x = 28,228.93 × 11,503.43
  4. Step 4: Simplify right side
    20,456.16x = 324,729,520.23
  5. Step 5: Solve for x
    x = 324,729,520.23/20,456.16
  6. Step 6: Final answer
    x = 15,874.41

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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.