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Finding the Fourth Proportional to 18,342.33, 27,509.85 and 8,978.33

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Solution

The fourth proportional to 18,342.33, 27,509.85 and 8,978.33 is: 13,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.33 : 27,509.85 = 8,978.33 : x
  2. Step 2: Convert to fraction form
    18,342.33/27,509.85 = 8,978.33/x
  3. Step 3: Cross multiply
    18,342.33x = 27,509.85 × 8,978.33
  4. Step 4: Simplify right side
    18,342.33x = 246,992,374.00
  5. Step 5: Solve for x
    x = 246,992,374.00/18,342.33
  6. Step 6: Final answer
    x = 13,465.70

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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.