Home / 19,965.28-29,922.48-10,609.78

Finding the Fourth Proportional to 19,965.28, 29,922.48 and 10,609.78

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Solution

The fourth proportional to 19,965.28, 29,922.48 and 10,609.78 is: 15,901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.28 : 29,922.48 = 10,609.78 : x
  2. Step 2: Convert to fraction form
    19,965.28/29,922.48 = 10,609.78/x
  3. Step 3: Cross multiply
    19,965.28x = 29,922.48 × 10,609.78
  4. Step 4: Simplify right side
    19,965.28x = 317,470,782.24
  5. Step 5: Solve for x
    x = 317,470,782.24/19,965.28
  6. Step 6: Final answer
    x = 15,901.15

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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.