Home / 21,871.40-32,812.83-6,877.91

Finding the Fourth Proportional to 21,871.40, 32,812.83 and 6,877.91

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Solution

The fourth proportional to 21,871.40, 32,812.83 and 6,877.91 is: 10,318.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.40 : 32,812.83 = 6,877.91 : x
  2. Step 2: Convert to fraction form
    21,871.40/32,812.83 = 6,877.91/x
  3. Step 3: Cross multiply
    21,871.40x = 32,812.83 × 6,877.91
  4. Step 4: Simplify right side
    21,871.40x = 225,683,589.05
  5. Step 5: Solve for x
    x = 225,683,589.05/21,871.40
  6. Step 6: Final answer
    x = 10,318.66

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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.