Home / 18,981.70-26,196.80-11,028.31

Finding the Fourth Proportional to 18,981.70, 26,196.80 and 11,028.31

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Solution

The fourth proportional to 18,981.70, 26,196.80 and 11,028.31 is: 15,220.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.70 : 26,196.80 = 11,028.31 : x
  2. Step 2: Convert to fraction form
    18,981.70/26,196.80 = 11,028.31/x
  3. Step 3: Cross multiply
    18,981.70x = 26,196.80 × 11,028.31
  4. Step 4: Simplify right side
    18,981.70x = 288,906,310.77
  5. Step 5: Solve for x
    x = 288,906,310.77/18,981.70
  6. Step 6: Final answer
    x = 15,220.26

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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.