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Finding the Fourth Proportional to 19,565.57, 27,000.59 and 15,081

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Solution

The fourth proportional to 19,565.57, 27,000.59 and 15,081 is: 20,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,565.57 : 27,000.59 = 15,081 : x
  2. Step 2: Convert to fraction form
    19,565.57/27,000.59 = 15,081/x
  3. Step 3: Cross multiply
    19,565.57x = 27,000.59 × 15,081
  4. Step 4: Simplify right side
    19,565.57x = 407,195,822.39
  5. Step 5: Solve for x
    x = 407,195,822.39/19,565.57
  6. Step 6: Final answer
    x = 20,811.86

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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.