Home / 22,958.70-31,680.88-12,887.56

Finding the Fourth Proportional to 22,958.70, 31,680.88 and 12,887.56

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Solution

The fourth proportional to 22,958.70, 31,680.88 and 12,887.56 is: 17,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,958.70 : 31,680.88 = 12,887.56 : x
  2. Step 2: Convert to fraction form
    22,958.70/31,680.88 = 12,887.56/x
  3. Step 3: Cross multiply
    22,958.70x = 31,680.88 × 12,887.56
  4. Step 4: Simplify right side
    22,958.70x = 408,289,241.85
  5. Step 5: Solve for x
    x = 408,289,241.85/22,958.70
  6. Step 6: Final answer
    x = 17,783.64

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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.