Home / 25,721.28-38,594.88-11,880

Finding the Fourth Proportional to 25,721.28, 38,594.88 and 11,880

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Solution

The fourth proportional to 25,721.28, 38,594.88 and 11,880 is: 17,825.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,721.28 : 38,594.88 = 11,880 : x
  2. Step 2: Convert to fraction form
    25,721.28/38,594.88 = 11,880/x
  3. Step 3: Cross multiply
    25,721.28x = 38,594.88 × 11,880
  4. Step 4: Simplify right side
    25,721.28x = 458,507,174.40
  5. Step 5: Solve for x
    x = 458,507,174.40/25,721.28
  6. Step 6: Final answer
    x = 17,825.99

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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.