Home / 20,522.43-28,321.20-11,569.95

Finding the Fourth Proportional to 20,522.43, 28,321.20 and 11,569.95

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Solution

The fourth proportional to 20,522.43, 28,321.20 and 11,569.95 is: 15,966.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.43 : 28,321.20 = 11,569.95 : x
  2. Step 2: Convert to fraction form
    20,522.43/28,321.20 = 11,569.95/x
  3. Step 3: Cross multiply
    20,522.43x = 28,321.20 × 11,569.95
  4. Step 4: Simplify right side
    20,522.43x = 327,674,867.94
  5. Step 5: Solve for x
    x = 327,674,867.94/20,522.43
  6. Step 6: Final answer
    x = 15,966.67

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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.