Home / 18,291.85-27,438.78-5,143.18

Finding the Fourth Proportional to 18,291.85, 27,438.78 and 5,143.18

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Solution

The fourth proportional to 18,291.85, 27,438.78 and 5,143.18 is: 7,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.85 : 27,438.78 = 5,143.18 : x
  2. Step 2: Convert to fraction form
    18,291.85/27,438.78 = 5,143.18/x
  3. Step 3: Cross multiply
    18,291.85x = 27,438.78 × 5,143.18
  4. Step 4: Simplify right side
    18,291.85x = 141,122,584.52
  5. Step 5: Solve for x
    x = 141,122,584.52/18,291.85
  6. Step 6: Final answer
    x = 7,715.05

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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.