Home / 20,748.92-31,117.78-7,601.36

Finding the Fourth Proportional to 20,748.92, 31,117.78 and 7,601.36

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Solution

The fourth proportional to 20,748.92, 31,117.78 and 7,601.36 is: 11,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.92 : 31,117.78 = 7,601.36 : x
  2. Step 2: Convert to fraction form
    20,748.92/31,117.78 = 7,601.36/x
  3. Step 3: Cross multiply
    20,748.92x = 31,117.78 × 7,601.36
  4. Step 4: Simplify right side
    20,748.92x = 236,537,448.18
  5. Step 5: Solve for x
    x = 236,537,448.18/20,748.92
  6. Step 6: Final answer
    x = 11,399.99

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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.