Home / 21,981.78-32,974.70-6,187.05

Finding the Fourth Proportional to 21,981.78, 32,974.70 and 6,187.05

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Solution

The fourth proportional to 21,981.78, 32,974.70 and 6,187.05 is: 9,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.78 : 32,974.70 = 6,187.05 : x
  2. Step 2: Convert to fraction form
    21,981.78/32,974.70 = 6,187.05/x
  3. Step 3: Cross multiply
    21,981.78x = 32,974.70 × 6,187.05
  4. Step 4: Simplify right side
    21,981.78x = 204,016,086.70
  5. Step 5: Solve for x
    x = 204,016,086.70/21,981.78
  6. Step 6: Final answer
    x = 9,281.14

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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.