Home / 20,760.08-31,121.58-7,603.52

Finding the Fourth Proportional to 20,760.08, 31,121.58 and 7,603.52

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Solution

The fourth proportional to 20,760.08, 31,121.58 and 7,603.52 is: 11,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.08 : 31,121.58 = 7,603.52 : x
  2. Step 2: Convert to fraction form
    20,760.08/31,121.58 = 7,603.52/x
  3. Step 3: Cross multiply
    20,760.08x = 31,121.58 × 7,603.52
  4. Step 4: Simplify right side
    20,760.08x = 236,633,555.96
  5. Step 5: Solve for x
    x = 236,633,555.96/20,760.08
  6. Step 6: Final answer
    x = 11,398.49

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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.