Home / 21,719.64-32,557.24-12,339.64

Finding the Fourth Proportional to 21,719.64, 32,557.24 and 12,339.64

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Solution

The fourth proportional to 21,719.64, 32,557.24 and 12,339.64 is: 18,496.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.64 : 32,557.24 = 12,339.64 : x
  2. Step 2: Convert to fraction form
    21,719.64/32,557.24 = 12,339.64/x
  3. Step 3: Cross multiply
    21,719.64x = 32,557.24 × 12,339.64
  4. Step 4: Simplify right side
    21,719.64x = 401,744,677.11
  5. Step 5: Solve for x
    x = 401,744,677.11/21,719.64
  6. Step 6: Final answer
    x = 18,496.84

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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.