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Finding the Fourth Proportional to 27,662.69, 38,173.20 and 15,724.71

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Solution

The fourth proportional to 27,662.69, 38,173.20 and 15,724.71 is: 21,699.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,662.69 : 38,173.20 = 15,724.71 : x
  2. Step 2: Convert to fraction form
    27,662.69/38,173.20 = 15,724.71/x
  3. Step 3: Cross multiply
    27,662.69x = 38,173.20 × 15,724.71
  4. Step 4: Simplify right side
    27,662.69x = 600,262,499.77
  5. Step 5: Solve for x
    x = 600,262,499.77/27,662.69
  6. Step 6: Final answer
    x = 21,699.35

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Half scale
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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.