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Finding the Fourth Proportional to 18,559.76, 27,839.68 and 6,859.36

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Solution

The fourth proportional to 18,559.76, 27,839.68 and 6,859.36 is: 10,289.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,559.76 : 27,839.68 = 6,859.36 : x
  2. Step 2: Convert to fraction form
    18,559.76/27,839.68 = 6,859.36/x
  3. Step 3: Cross multiply
    18,559.76x = 27,839.68 × 6,859.36
  4. Step 4: Simplify right side
    18,559.76x = 190,962,387.40
  5. Step 5: Solve for x
    x = 190,962,387.40/18,559.76
  6. Step 6: Final answer
    x = 10,289.05

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1.5x scale

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.