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Finding the Fourth Proportional to 27,641.80, 38,138.88 and 16,883.92

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Solution

The fourth proportional to 27,641.80, 38,138.88 and 16,883.92 is: 23,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,641.80 : 38,138.88 = 16,883.92 : x
  2. Step 2: Convert to fraction form
    27,641.80/38,138.88 = 16,883.92/x
  3. Step 3: Cross multiply
    27,641.80x = 38,138.88 × 16,883.92
  4. Step 4: Simplify right side
    27,641.80x = 643,933,798.81
  5. Step 5: Solve for x
    x = 643,933,798.81/27,641.80
  6. Step 6: Final answer
    x = 23,295.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.