Home / 22,787.70-31,441.98-13,222.05

Finding the Fourth Proportional to 22,787.70, 31,441.98 and 13,222.05

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Solution

The fourth proportional to 22,787.70, 31,441.98 and 13,222.05 is: 18,243.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,787.70 : 31,441.98 = 13,222.05 : x
  2. Step 2: Convert to fraction form
    22,787.70/31,441.98 = 13,222.05/x
  3. Step 3: Cross multiply
    22,787.70x = 31,441.98 × 13,222.05
  4. Step 4: Simplify right side
    22,787.70x = 415,727,431.66
  5. Step 5: Solve for x
    x = 415,727,431.66/22,787.70
  6. Step 6: Final answer
    x = 18,243.50

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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.