Home / 20,765.92-31,141.44-7,615.36

Finding the Fourth Proportional to 20,765.92, 31,141.44 and 7,615.36

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Solution

The fourth proportional to 20,765.92, 31,141.44 and 7,615.36 is: 11,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.92 : 31,141.44 = 7,615.36 : x
  2. Step 2: Convert to fraction form
    20,765.92/31,141.44 = 7,615.36/x
  3. Step 3: Cross multiply
    20,765.92x = 31,141.44 × 7,615.36
  4. Step 4: Simplify right side
    20,765.92x = 237,153,276.52
  5. Step 5: Solve for x
    x = 237,153,276.52/20,765.92
  6. Step 6: Final answer
    x = 11,420.31

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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.