Home / 20,665.55-31,001.24-6,622.29

Finding the Fourth Proportional to 20,665.55, 31,001.24 and 6,622.29

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Solution

The fourth proportional to 20,665.55, 31,001.24 and 6,622.29 is: 9,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.55 : 31,001.24 = 6,622.29 : x
  2. Step 2: Convert to fraction form
    20,665.55/31,001.24 = 6,622.29/x
  3. Step 3: Cross multiply
    20,665.55x = 31,001.24 × 6,622.29
  4. Step 4: Simplify right side
    20,665.55x = 205,299,201.64
  5. Step 5: Solve for x
    x = 205,299,201.64/20,665.55
  6. Step 6: Final answer
    x = 9,934.37

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1.5x scale

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.