Home / 22,786.70-31,440.60-13,221.05

Finding the Fourth Proportional to 22,786.70, 31,440.60 and 13,221.05

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Solution

The fourth proportional to 22,786.70, 31,440.60 and 13,221.05 is: 18,242.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,786.70 : 31,440.60 = 13,221.05 : x
  2. Step 2: Convert to fraction form
    22,786.70/31,440.60 = 13,221.05/x
  3. Step 3: Cross multiply
    22,786.70x = 31,440.60 × 13,221.05
  4. Step 4: Simplify right side
    22,786.70x = 415,677,587.43
  5. Step 5: Solve for x
    x = 415,677,587.43/22,786.70
  6. Step 6: Final answer
    x = 18,242.11

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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.