Home / 19,965.48-29,956.92-10,720.68

Finding the Fourth Proportional to 19,965.48, 29,956.92 and 10,720.68

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Solution

The fourth proportional to 19,965.48, 29,956.92 and 10,720.68 is: 16,085.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.48 : 29,956.92 = 10,720.68 : x
  2. Step 2: Convert to fraction form
    19,965.48/29,956.92 = 10,720.68/x
  3. Step 3: Cross multiply
    19,965.48x = 29,956.92 × 10,720.68
  4. Step 4: Simplify right side
    19,965.48x = 321,158,553.11
  5. Step 5: Solve for x
    x = 321,158,553.11/19,965.48
  6. Step 6: Final answer
    x = 16,085.69

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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.