Home / 22,961.58-31,687.53-12,890.76

Finding the Fourth Proportional to 22,961.58, 31,687.53 and 12,890.76

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Solution

The fourth proportional to 22,961.58, 31,687.53 and 12,890.76 is: 17,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,961.58 : 31,687.53 = 12,890.76 : x
  2. Step 2: Convert to fraction form
    22,961.58/31,687.53 = 12,890.76/x
  3. Step 3: Cross multiply
    22,961.58x = 31,687.53 × 12,890.76
  4. Step 4: Simplify right side
    22,961.58x = 408,476,344.22
  5. Step 5: Solve for x
    x = 408,476,344.22/22,961.58
  6. Step 6: Final answer
    x = 17,789.56

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1.5x scale

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.