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Finding the Fourth Proportional to 18,589.28, 27,750.21 and 15,928.13

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Solution

The fourth proportional to 18,589.28, 27,750.21 and 15,928.13 is: 23,777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.28 : 27,750.21 = 15,928.13 : x
  2. Step 2: Convert to fraction form
    18,589.28/27,750.21 = 15,928.13/x
  3. Step 3: Cross multiply
    18,589.28x = 27,750.21 × 15,928.13
  4. Step 4: Simplify right side
    18,589.28x = 442,008,813.66
  5. Step 5: Solve for x
    x = 442,008,813.66/18,589.28
  6. Step 6: Final answer
    x = 23,777.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.