Home / 25.30-38.14-21.32

Finding the Fourth Proportional to 25.30, 38.14 and 21.32

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Solution

The fourth proportional to 25.30, 38.14 and 21.32 is: 32.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.30 : 38.14 = 21.32 : x
  2. Step 2: Convert to fraction form
    25.30/38.14 = 21.32/x
  3. Step 3: Cross multiply
    25.30x = 38.14 × 21.32
  4. Step 4: Simplify right side
    25.30x = 812.85
  5. Step 5: Solve for x
    x = 812.85/25.30
  6. Step 6: Final answer
    x = 32.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.