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Finding the Fourth Proportional to 18,572.16, 27,857.52 and 4,721.52

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Solution

The fourth proportional to 18,572.16, 27,857.52 and 4,721.52 is: 7,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.16 : 27,857.52 = 4,721.52 : x
  2. Step 2: Convert to fraction form
    18,572.16/27,857.52 = 4,721.52/x
  3. Step 3: Cross multiply
    18,572.16x = 27,857.52 × 4,721.52
  4. Step 4: Simplify right side
    18,572.16x = 131,529,837.83
  5. Step 5: Solve for x
    x = 131,529,837.83/18,572.16
  6. Step 6: Final answer
    x = 7,082.10

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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.