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Finding the Fourth Proportional to 18,603.59, 27,905.60 and 5,456.22

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Solution

The fourth proportional to 18,603.59, 27,905.60 and 5,456.22 is: 8,184.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.59 : 27,905.60 = 5,456.22 : x
  2. Step 2: Convert to fraction form
    18,603.59/27,905.60 = 5,456.22/x
  3. Step 3: Cross multiply
    18,603.59x = 27,905.60 × 5,456.22
  4. Step 4: Simplify right side
    18,603.59x = 152,259,065.55
  5. Step 5: Solve for x
    x = 152,259,065.55/18,603.59
  6. Step 6: Final answer
    x = 8,184.39

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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.