Home / 20,719.43-28,592.79-11,288.00

Finding the Fourth Proportional to 20,719.43, 28,592.79 and 11,288.00

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Solution

The fourth proportional to 20,719.43, 28,592.79 and 11,288.00 is: 15,577.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.43 : 28,592.79 = 11,288.00 : x
  2. Step 2: Convert to fraction form
    20,719.43/28,592.79 = 11,288.00/x
  3. Step 3: Cross multiply
    20,719.43x = 28,592.79 × 11,288.00
  4. Step 4: Simplify right side
    20,719.43x = 322,755,270.56
  5. Step 5: Solve for x
    x = 322,755,270.56/20,719.43
  6. Step 6: Final answer
    x = 15,577.42

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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.