Home / 21,523.78-32,268.39-12,158.02

Finding the Fourth Proportional to 21,523.78, 32,268.39 and 12,158.02

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Solution

The fourth proportional to 21,523.78, 32,268.39 and 12,158.02 is: 18,227.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.78 : 32,268.39 = 12,158.02 : x
  2. Step 2: Convert to fraction form
    21,523.78/32,268.39 = 12,158.02/x
  3. Step 3: Cross multiply
    21,523.78x = 32,268.39 × 12,158.02
  4. Step 4: Simplify right side
    21,523.78x = 392,319,730.99
  5. Step 5: Solve for x
    x = 392,319,730.99/21,523.78
  6. Step 6: Final answer
    x = 18,227.27

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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.