Home / 20,956.81-31,435.17-6,165.71

Finding the Fourth Proportional to 20,956.81, 31,435.17 and 6,165.71

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Solution

The fourth proportional to 20,956.81, 31,435.17 and 6,165.71 is: 9,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.81 : 31,435.17 = 6,165.71 : x
  2. Step 2: Convert to fraction form
    20,956.81/31,435.17 = 6,165.71/x
  3. Step 3: Cross multiply
    20,956.81x = 31,435.17 × 6,165.71
  4. Step 4: Simplify right side
    20,956.81x = 193,820,142.02
  5. Step 5: Solve for x
    x = 193,820,142.02/20,956.81
  6. Step 6: Final answer
    x = 9,248.55

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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.