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Finding the Fourth Proportional to 18,648.54, 27,984.60 and 16,897.10

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Solution

The fourth proportional to 18,648.54, 27,984.60 and 16,897.10 is: 25,356.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.54 : 27,984.60 = 16,897.10 : x
  2. Step 2: Convert to fraction form
    18,648.54/27,984.60 = 16,897.10/x
  3. Step 3: Cross multiply
    18,648.54x = 27,984.60 × 16,897.10
  4. Step 4: Simplify right side
    18,648.54x = 472,858,444.74
  5. Step 5: Solve for x
    x = 472,858,444.74/18,648.54
  6. Step 6: Final answer
    x = 25,356.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.