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Finding the Fourth Proportional to 18,564.61, 27,859.47 and 6,877.93

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Solution

The fourth proportional to 18,564.61, 27,859.47 and 6,877.93 is: 10,321.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,564.61 : 27,859.47 = 6,877.93 : x
  2. Step 2: Convert to fraction form
    18,564.61/27,859.47 = 6,877.93/x
  3. Step 3: Cross multiply
    18,564.61x = 27,859.47 × 6,877.93
  4. Step 4: Simplify right side
    18,564.61x = 191,615,484.50
  5. Step 5: Solve for x
    x = 191,615,484.50/18,564.61
  6. Step 6: Final answer
    x = 10,321.55

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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.