Home / 25,811.40-38,717.10-15,961.80

Finding the Fourth Proportional to 25,811.40, 38,717.10 and 15,961.80

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Solution

The fourth proportional to 25,811.40, 38,717.10 and 15,961.80 is: 23,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,811.40 : 38,717.10 = 15,961.80 : x
  2. Step 2: Convert to fraction form
    25,811.40/38,717.10 = 15,961.80/x
  3. Step 3: Cross multiply
    25,811.40x = 38,717.10 × 15,961.80
  4. Step 4: Simplify right side
    25,811.40x = 617,994,606.78
  5. Step 5: Solve for x
    x = 617,994,606.78/25,811.40
  6. Step 6: Final answer
    x = 23,942.70

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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.