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Finding the Fourth Proportional to 18,572.08, 27,857.76 and 4,721.08

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Solution

The fourth proportional to 18,572.08, 27,857.76 and 4,721.08 is: 7,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.08 : 27,857.76 = 4,721.08 : x
  2. Step 2: Convert to fraction form
    18,572.08/27,857.76 = 4,721.08/x
  3. Step 3: Cross multiply
    18,572.08x = 27,857.76 × 4,721.08
  4. Step 4: Simplify right side
    18,572.08x = 131,518,713.58
  5. Step 5: Solve for x
    x = 131,518,713.58/18,572.08
  6. Step 6: Final answer
    x = 7,081.53

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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.