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Finding the Fourth Proportional to 18,300.82, 27,438.80 and 5,817.10

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Solution

The fourth proportional to 18,300.82, 27,438.80 and 5,817.10 is: 8,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.82 : 27,438.80 = 5,817.10 : x
  2. Step 2: Convert to fraction form
    18,300.82/27,438.80 = 5,817.10/x
  3. Step 3: Cross multiply
    18,300.82x = 27,438.80 × 5,817.10
  4. Step 4: Simplify right side
    18,300.82x = 159,614,106.29
  5. Step 5: Solve for x
    x = 159,614,106.29/18,300.82
  6. Step 6: Final answer
    x = 8,721.69

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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.