Home / 20,719.92-28,593.48-11,288.50

Finding the Fourth Proportional to 20,719.92, 28,593.48 and 11,288.50

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Solution

The fourth proportional to 20,719.92, 28,593.48 and 11,288.50 is: 15,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.92 : 28,593.48 = 11,288.50 : x
  2. Step 2: Convert to fraction form
    20,719.92/28,593.48 = 11,288.50/x
  3. Step 3: Cross multiply
    20,719.92x = 28,593.48 × 11,288.50
  4. Step 4: Simplify right side
    20,719.92x = 322,777,498.98
  5. Step 5: Solve for x
    x = 322,777,498.98/20,719.92
  6. Step 6: Final answer
    x = 15,578.12

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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.