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Finding the Fourth Proportional to 18,572.65, 27,859.04 and 4,721.65

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Solution

The fourth proportional to 18,572.65, 27,859.04 and 4,721.65 is: 7,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.65 : 27,859.04 = 4,721.65 : x
  2. Step 2: Convert to fraction form
    18,572.65/27,859.04 = 4,721.65/x
  3. Step 3: Cross multiply
    18,572.65x = 27,859.04 × 4,721.65
  4. Step 4: Simplify right side
    18,572.65x = 131,540,636.22
  5. Step 5: Solve for x
    x = 131,540,636.22/18,572.65
  6. Step 6: Final answer
    x = 7,082.49

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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.