Home / 22,558.80-31,125.84-13,121.76

Finding the Fourth Proportional to 22,558.80, 31,125.84 and 13,121.76

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Solution

The fourth proportional to 22,558.80, 31,125.84 and 13,121.76 is: 18,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.80 : 31,125.84 = 13,121.76 : x
  2. Step 2: Convert to fraction form
    22,558.80/31,125.84 = 13,121.76/x
  3. Step 3: Cross multiply
    22,558.80x = 31,125.84 × 13,121.76
  4. Step 4: Simplify right side
    22,558.80x = 408,425,802.28
  5. Step 5: Solve for x
    x = 408,425,802.28/22,558.80
  6. Step 6: Final answer
    x = 18,104.94

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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.