Home / 20,436.18-30,615.39-11,644.44

Finding the Fourth Proportional to 20,436.18, 30,615.39 and 11,644.44

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Solution

The fourth proportional to 20,436.18, 30,615.39 and 11,644.44 is: 17,444.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.18 : 30,615.39 = 11,644.44 : x
  2. Step 2: Convert to fraction form
    20,436.18/30,615.39 = 11,644.44/x
  3. Step 3: Cross multiply
    20,436.18x = 30,615.39 × 11,644.44
  4. Step 4: Simplify right side
    20,436.18x = 356,499,071.93
  5. Step 5: Solve for x
    x = 356,499,071.93/20,436.18
  6. Step 6: Final answer
    x = 17,444.51

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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.