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Finding the Fourth Proportional to 18,031.86, 24,883.47 and 9,855.13

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Solution

The fourth proportional to 18,031.86, 24,883.47 and 9,855.13 is: 13,599.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.86 : 24,883.47 = 9,855.13 : x
  2. Step 2: Convert to fraction form
    18,031.86/24,883.47 = 9,855.13/x
  3. Step 3: Cross multiply
    18,031.86x = 24,883.47 × 9,855.13
  4. Step 4: Simplify right side
    18,031.86x = 245,229,831.70
  5. Step 5: Solve for x
    x = 245,229,831.70/18,031.86
  6. Step 6: Final answer
    x = 13,599.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.