Home / 20,752.29-28,638.62-11,320.85

Finding the Fourth Proportional to 20,752.29, 28,638.62 and 11,320.85

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Solution

The fourth proportional to 20,752.29, 28,638.62 and 11,320.85 is: 15,623.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.29 : 28,638.62 = 11,320.85 : x
  2. Step 2: Convert to fraction form
    20,752.29/28,638.62 = 11,320.85/x
  3. Step 3: Cross multiply
    20,752.29x = 28,638.62 × 11,320.85
  4. Step 4: Simplify right side
    20,752.29x = 324,213,321.43
  5. Step 5: Solve for x
    x = 324,213,321.43/20,752.29
  6. Step 6: Final answer
    x = 15,623.01

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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.