Home / 21,213.36-31,817.58-5,632.20

Finding the Fourth Proportional to 21,213.36, 31,817.58 and 5,632.20

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Solution

The fourth proportional to 21,213.36, 31,817.58 and 5,632.20 is: 8,447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.36 : 31,817.58 = 5,632.20 : x
  2. Step 2: Convert to fraction form
    21,213.36/31,817.58 = 5,632.20/x
  3. Step 3: Cross multiply
    21,213.36x = 31,817.58 × 5,632.20
  4. Step 4: Simplify right side
    21,213.36x = 179,202,974.08
  5. Step 5: Solve for x
    x = 179,202,974.08/21,213.36
  6. Step 6: Final answer
    x = 8,447.65

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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.