Home / 21,142.25-31,719.60-6,353.44

Finding the Fourth Proportional to 21,142.25, 31,719.60 and 6,353.44

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Solution

The fourth proportional to 21,142.25, 31,719.60 and 6,353.44 is: 9,532.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.25 : 31,719.60 = 6,353.44 : x
  2. Step 2: Convert to fraction form
    21,142.25/31,719.60 = 6,353.44/x
  3. Step 3: Cross multiply
    21,142.25x = 31,719.60 × 6,353.44
  4. Step 4: Simplify right side
    21,142.25x = 201,528,496.13
  5. Step 5: Solve for x
    x = 201,528,496.13/21,142.25
  6. Step 6: Final answer
    x = 9,532.03

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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.