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Finding the Fourth Proportional to 18,588.71, 27,879.35 and 6,899.19

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Solution

The fourth proportional to 18,588.71, 27,879.35 and 6,899.19 is: 10,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.71 : 27,879.35 = 6,899.19 : x
  2. Step 2: Convert to fraction form
    18,588.71/27,879.35 = 6,899.19/x
  3. Step 3: Cross multiply
    18,588.71x = 27,879.35 × 6,899.19
  4. Step 4: Simplify right side
    18,588.71x = 192,344,898.23
  5. Step 5: Solve for x
    x = 192,344,898.23/18,588.71
  6. Step 6: Final answer
    x = 10,347.41

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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.