Home / 21,719.40-32,579.10-9,236.20

Finding the Fourth Proportional to 21,719.40, 32,579.10 and 9,236.20

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Solution

The fourth proportional to 21,719.40, 32,579.10 and 9,236.20 is: 13,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.40 : 32,579.10 = 9,236.20 : x
  2. Step 2: Convert to fraction form
    21,719.40/32,579.10 = 9,236.20/x
  3. Step 3: Cross multiply
    21,719.40x = 32,579.10 × 9,236.20
  4. Step 4: Simplify right side
    21,719.40x = 300,907,083.42
  5. Step 5: Solve for x
    x = 300,907,083.42/21,719.40
  6. Step 6: Final answer
    x = 13,854.30

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Similar ratio
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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.