Home / 20,522.70-28,321.53-11,569.41

Finding the Fourth Proportional to 20,522.70, 28,321.53 and 11,569.41

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Solution

The fourth proportional to 20,522.70, 28,321.53 and 11,569.41 is: 15,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.70 : 28,321.53 = 11,569.41 : x
  2. Step 2: Convert to fraction form
    20,522.70/28,321.53 = 11,569.41/x
  3. Step 3: Cross multiply
    20,522.70x = 28,321.53 × 11,569.41
  4. Step 4: Simplify right side
    20,522.70x = 327,663,392.40
  5. Step 5: Solve for x
    x = 327,663,392.40/20,522.70
  6. Step 6: Final answer
    x = 15,965.90

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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.