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Finding the Fourth Proportional to 18,628.91, 27,943.11 and 4,589.10

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Solution

The fourth proportional to 18,628.91, 27,943.11 and 4,589.10 is: 6,883.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.91 : 27,943.11 = 4,589.10 : x
  2. Step 2: Convert to fraction form
    18,628.91/27,943.11 = 4,589.10/x
  3. Step 3: Cross multiply
    18,628.91x = 27,943.11 × 4,589.10
  4. Step 4: Simplify right side
    18,628.91x = 128,233,726.10
  5. Step 5: Solve for x
    x = 128,233,726.10/18,628.91
  6. Step 6: Final answer
    x = 6,883.59

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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.