Home / 21,244.55-31,871.81-20,891.93

Finding the Fourth Proportional to 21,244.55, 31,871.81 and 20,891.93

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Solution

The fourth proportional to 21,244.55, 31,871.81 and 20,891.93 is: 31,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.55 : 31,871.81 = 20,891.93 : x
  2. Step 2: Convert to fraction form
    21,244.55/31,871.81 = 20,891.93/x
  3. Step 3: Cross multiply
    21,244.55x = 31,871.81 × 20,891.93
  4. Step 4: Simplify right side
    21,244.55x = 665,863,516.36
  5. Step 5: Solve for x
    x = 665,863,516.36/21,244.55
  6. Step 6: Final answer
    x = 31,342.80

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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.