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Finding the Fourth Proportional to 27,904.80, 41,857.20 and 9,436.80

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Solution

The fourth proportional to 27,904.80, 41,857.20 and 9,436.80 is: 14,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,904.80 : 41,857.20 = 9,436.80 : x
  2. Step 2: Convert to fraction form
    27,904.80/41,857.20 = 9,436.80/x
  3. Step 3: Cross multiply
    27,904.80x = 41,857.20 × 9,436.80
  4. Step 4: Simplify right side
    27,904.80x = 394,998,024.96
  5. Step 5: Solve for x
    x = 394,998,024.96/27,904.80
  6. Step 6: Final answer
    x = 14,155.20

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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.