Home / 20,847.40-31,271.22-5,265.16

Finding the Fourth Proportional to 20,847.40, 31,271.22 and 5,265.16

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Solution

The fourth proportional to 20,847.40, 31,271.22 and 5,265.16 is: 7,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.40 : 31,271.22 = 5,265.16 : x
  2. Step 2: Convert to fraction form
    20,847.40/31,271.22 = 5,265.16/x
  3. Step 3: Cross multiply
    20,847.40x = 31,271.22 × 5,265.16
  4. Step 4: Simplify right side
    20,847.40x = 164,647,976.70
  5. Step 5: Solve for x
    x = 164,647,976.70/20,847.40
  6. Step 6: Final answer
    x = 7,897.77

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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.