Home / 20,773.28-31,141.36-7,622.60

Finding the Fourth Proportional to 20,773.28, 31,141.36 and 7,622.60

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Solution

The fourth proportional to 20,773.28, 31,141.36 and 7,622.60 is: 11,427.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.28 : 31,141.36 = 7,622.60 : x
  2. Step 2: Convert to fraction form
    20,773.28/31,141.36 = 7,622.60/x
  3. Step 3: Cross multiply
    20,773.28x = 31,141.36 × 7,622.60
  4. Step 4: Simplify right side
    20,773.28x = 237,378,130.74
  5. Step 5: Solve for x
    x = 237,378,130.74/20,773.28
  6. Step 6: Final answer
    x = 11,427.09

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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.