Home / 34.23-51.26-21.36

Finding the Fourth Proportional to 34.23, 51.26 and 21.36

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Solution

The fourth proportional to 34.23, 51.26 and 21.36 is: 31.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.23 : 51.26 = 21.36 : x
  2. Step 2: Convert to fraction form
    34.23/51.26 = 21.36/x
  3. Step 3: Cross multiply
    34.23x = 51.26 × 21.36
  4. Step 4: Simplify right side
    34.23x = 1,094.81
  5. Step 5: Solve for x
    x = 1,094.81/34.23
  6. Step 6: Final answer
    x = 31.98

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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.