Home / 25,409.97-38,129.49-19,847.70

Finding the Fourth Proportional to 25,409.97, 38,129.49 and 19,847.70

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Solution

The fourth proportional to 25,409.97, 38,129.49 and 19,847.70 is: 29,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.97 : 38,129.49 = 19,847.70 : x
  2. Step 2: Convert to fraction form
    25,409.97/38,129.49 = 19,847.70/x
  3. Step 3: Cross multiply
    25,409.97x = 38,129.49 × 19,847.70
  4. Step 4: Simplify right side
    25,409.97x = 756,782,678.67
  5. Step 5: Solve for x
    x = 756,782,678.67/25,409.97
  6. Step 6: Final answer
    x = 29,782.90

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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.