Home / 18,299.40-27,438.78-5,817.12

Finding the Fourth Proportional to 18,299.40, 27,438.78 and 5,817.12

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Solution

The fourth proportional to 18,299.40, 27,438.78 and 5,817.12 is: 8,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.40 : 27,438.78 = 5,817.12 : x
  2. Step 2: Convert to fraction form
    18,299.40/27,438.78 = 5,817.12/x
  3. Step 3: Cross multiply
    18,299.40x = 27,438.78 × 5,817.12
  4. Step 4: Simplify right side
    18,299.40x = 159,614,675.91
  5. Step 5: Solve for x
    x = 159,614,675.91/18,299.40
  6. Step 6: Final answer
    x = 8,722.40

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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.