Home / 22,759.19-31,408.74-12,687.70

Finding the Fourth Proportional to 22,759.19, 31,408.74 and 12,687.70

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Solution

The fourth proportional to 22,759.19, 31,408.74 and 12,687.70 is: 17,509.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,759.19 : 31,408.74 = 12,687.70 : x
  2. Step 2: Convert to fraction form
    22,759.19/31,408.74 = 12,687.70/x
  3. Step 3: Cross multiply
    22,759.19x = 31,408.74 × 12,687.70
  4. Step 4: Simplify right side
    22,759.19x = 398,504,670.50
  5. Step 5: Solve for x
    x = 398,504,670.50/22,759.19
  6. Step 6: Final answer
    x = 17,509.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.