Home / 18,211.78-27,317.85-5,065.18

Finding the Fourth Proportional to 18,211.78, 27,317.85 and 5,065.18

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Solution

The fourth proportional to 18,211.78, 27,317.85 and 5,065.18 is: 7,597.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.78 : 27,317.85 = 5,065.18 : x
  2. Step 2: Convert to fraction form
    18,211.78/27,317.85 = 5,065.18/x
  3. Step 3: Cross multiply
    18,211.78x = 27,317.85 × 5,065.18
  4. Step 4: Simplify right side
    18,211.78x = 138,369,740.17
  5. Step 5: Solve for x
    x = 138,369,740.17/18,211.78
  6. Step 6: Final answer
    x = 7,597.81

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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.