Home / 25,418.88-38,130.30-7,648.20

Finding the Fourth Proportional to 25,418.88, 38,130.30 and 7,648.20

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Solution

The fourth proportional to 25,418.88, 38,130.30 and 7,648.20 is: 11,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,418.88 : 38,130.30 = 7,648.20 : x
  2. Step 2: Convert to fraction form
    25,418.88/38,130.30 = 7,648.20/x
  3. Step 3: Cross multiply
    25,418.88x = 38,130.30 × 7,648.20
  4. Step 4: Simplify right side
    25,418.88x = 291,628,160.46
  5. Step 5: Solve for x
    x = 291,628,160.46/25,418.88
  6. Step 6: Final answer
    x = 11,472.90

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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.