Home / 20,722.18-31,090.56-9,033.88

Finding the Fourth Proportional to 20,722.18, 31,090.56 and 9,033.88

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Solution

The fourth proportional to 20,722.18, 31,090.56 and 9,033.88 is: 13,554.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.18 : 31,090.56 = 9,033.88 : x
  2. Step 2: Convert to fraction form
    20,722.18/31,090.56 = 9,033.88/x
  3. Step 3: Cross multiply
    20,722.18x = 31,090.56 × 9,033.88
  4. Step 4: Simplify right side
    20,722.18x = 280,868,388.17
  5. Step 5: Solve for x
    x = 280,868,388.17/20,722.18
  6. Step 6: Final answer
    x = 13,554.00

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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.