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Finding the Fourth Proportional to 26,809.30, 40,200.99 and 15,719.59

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Solution

The fourth proportional to 26,809.30, 40,200.99 and 15,719.59 is: 23,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,809.30 : 40,200.99 = 15,719.59 : x
  2. Step 2: Convert to fraction form
    26,809.30/40,200.99 = 15,719.59/x
  3. Step 3: Cross multiply
    26,809.30x = 40,200.99 × 15,719.59
  4. Step 4: Simplify right side
    26,809.30x = 631,943,080.39
  5. Step 5: Solve for x
    x = 631,943,080.39/26,809.30
  6. Step 6: Final answer
    x = 23,571.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.