Home / 20,709.16-31,045.12-7,552.36

Finding the Fourth Proportional to 20,709.16, 31,045.12 and 7,552.36

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Solution

The fourth proportional to 20,709.16, 31,045.12 and 7,552.36 is: 11,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.16 : 31,045.12 = 7,552.36 : x
  2. Step 2: Convert to fraction form
    20,709.16/31,045.12 = 7,552.36/x
  3. Step 3: Cross multiply
    20,709.16x = 31,045.12 × 7,552.36
  4. Step 4: Simplify right side
    20,709.16x = 234,463,922.48
  5. Step 5: Solve for x
    x = 234,463,922.48/20,709.16
  6. Step 6: Final answer
    x = 11,321.75

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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.