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Finding the Fourth Proportional to 18,551.61, 27,831.06 and 6,864.93

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Solution

The fourth proportional to 18,551.61, 27,831.06 and 6,864.93 is: 10,298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.61 : 27,831.06 = 6,864.93 : x
  2. Step 2: Convert to fraction form
    18,551.61/27,831.06 = 6,864.93/x
  3. Step 3: Cross multiply
    18,551.61x = 27,831.06 × 6,864.93
  4. Step 4: Simplify right side
    18,551.61x = 191,058,278.73
  5. Step 5: Solve for x
    x = 191,058,278.73/18,551.61
  6. Step 6: Final answer
    x = 10,298.74

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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.