Home / 25,727.20-38,533.20-21,119.20

Finding the Fourth Proportional to 25,727.20, 38,533.20 and 21,119.20

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Solution

The fourth proportional to 25,727.20, 38,533.20 and 21,119.20 is: 31,631.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,727.20 : 38,533.20 = 21,119.20 : x
  2. Step 2: Convert to fraction form
    25,727.20/38,533.20 = 21,119.20/x
  3. Step 3: Cross multiply
    25,727.20x = 38,533.20 × 21,119.20
  4. Step 4: Simplify right side
    25,727.20x = 813,790,357.44
  5. Step 5: Solve for x
    x = 813,790,357.44/25,727.20
  6. Step 6: Final answer
    x = 31,631.52

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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.