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Finding the Fourth Proportional to 18,642.78, 28,110.59 and 17,093.10

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Solution

The fourth proportional to 18,642.78, 28,110.59 and 17,093.10 is: 25,773.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.78 : 28,110.59 = 17,093.10 : x
  2. Step 2: Convert to fraction form
    18,642.78/28,110.59 = 17,093.10/x
  3. Step 3: Cross multiply
    18,642.78x = 28,110.59 × 17,093.10
  4. Step 4: Simplify right side
    18,642.78x = 480,497,040.46
  5. Step 5: Solve for x
    x = 480,497,040.46/18,642.78
  6. Step 6: Final answer
    x = 25,773.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.