Home / 13,188.97-19,777.07-4,872.90

Finding the Fourth Proportional to 13,188.97, 19,777.07 and 4,872.90

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Solution

The fourth proportional to 13,188.97, 19,777.07 and 4,872.90 is: 7,306.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.97 : 19,777.07 = 4,872.90 : x
  2. Step 2: Convert to fraction form
    13,188.97/19,777.07 = 4,872.90/x
  3. Step 3: Cross multiply
    13,188.97x = 19,777.07 × 4,872.90
  4. Step 4: Simplify right side
    13,188.97x = 96,371,696.59
  5. Step 5: Solve for x
    x = 96,371,696.59/13,188.97
  6. Step 6: Final answer
    x = 7,306.99

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1.5x scale

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.