Home / 18,217.40-27,311.28-7,122.08

Finding the Fourth Proportional to 18,217.40, 27,311.28 and 7,122.08

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Solution

The fourth proportional to 18,217.40, 27,311.28 and 7,122.08 is: 10,677.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.40 : 27,311.28 = 7,122.08 : x
  2. Step 2: Convert to fraction form
    18,217.40/27,311.28 = 7,122.08/x
  3. Step 3: Cross multiply
    18,217.40x = 27,311.28 × 7,122.08
  4. Step 4: Simplify right side
    18,217.40x = 194,513,121.06
  5. Step 5: Solve for x
    x = 194,513,121.06/18,217.40
  6. Step 6: Final answer
    x = 10,677.33

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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.