Home / 13,863.18-20,781.81-5,095.74

Finding the Fourth Proportional to 13,863.18, 20,781.81 and 5,095.74

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Solution

The fourth proportional to 13,863.18, 20,781.81 and 5,095.74 is: 7,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.18 : 20,781.81 = 5,095.74 : x
  2. Step 2: Convert to fraction form
    13,863.18/20,781.81 = 5,095.74/x
  3. Step 3: Cross multiply
    13,863.18x = 20,781.81 × 5,095.74
  4. Step 4: Simplify right side
    13,863.18x = 105,898,700.49
  5. Step 5: Solve for x
    x = 105,898,700.49/13,863.18
  6. Step 6: Final answer
    x = 7,638.85

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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.