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Finding the Fourth Proportional to 18,448.65, 27,679.59 and 9,559.71

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Solution

The fourth proportional to 18,448.65, 27,679.59 and 9,559.71 is: 14,342.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.65 : 27,679.59 = 9,559.71 : x
  2. Step 2: Convert to fraction form
    18,448.65/27,679.59 = 9,559.71/x
  3. Step 3: Cross multiply
    18,448.65x = 27,679.59 × 9,559.71
  4. Step 4: Simplify right side
    18,448.65x = 264,608,853.32
  5. Step 5: Solve for x
    x = 264,608,853.32/18,448.65
  6. Step 6: Final answer
    x = 14,342.99

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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.