Home / 20,522.88-28,321.56-11,572.56

Finding the Fourth Proportional to 20,522.88, 28,321.56 and 11,572.56

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Solution

The fourth proportional to 20,522.88, 28,321.56 and 11,572.56 is: 15,970.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.88 : 28,321.56 = 11,572.56 : x
  2. Step 2: Convert to fraction form
    20,522.88/28,321.56 = 11,572.56/x
  3. Step 3: Cross multiply
    20,522.88x = 28,321.56 × 11,572.56
  4. Step 4: Simplify right side
    20,522.88x = 327,752,952.39
  5. Step 5: Solve for x
    x = 327,752,952.39/20,522.88
  6. Step 6: Final answer
    x = 15,970.12

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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.