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Finding the Fourth Proportional to 18,902.71, 26,093.82 and 13,455.33

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Solution

The fourth proportional to 18,902.71, 26,093.82 and 13,455.33 is: 18,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.71 : 26,093.82 = 13,455.33 : x
  2. Step 2: Convert to fraction form
    18,902.71/26,093.82 = 13,455.33/x
  3. Step 3: Cross multiply
    18,902.71x = 26,093.82 × 13,455.33
  4. Step 4: Simplify right side
    18,902.71x = 351,100,959.06
  5. Step 5: Solve for x
    x = 351,100,959.06/18,902.71
  6. Step 6: Final answer
    x = 18,574.11

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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.