Home / 25,863.78-35,685.99-18,777.90

Finding the Fourth Proportional to 25,863.78, 35,685.99 and 18,777.90

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Solution

The fourth proportional to 25,863.78, 35,685.99 and 18,777.90 is: 25,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,863.78 : 35,685.99 = 18,777.90 : x
  2. Step 2: Convert to fraction form
    25,863.78/35,685.99 = 18,777.90/x
  3. Step 3: Cross multiply
    25,863.78x = 35,685.99 × 18,777.90
  4. Step 4: Simplify right side
    25,863.78x = 670,107,951.62
  5. Step 5: Solve for x
    x = 670,107,951.62/25,863.78
  6. Step 6: Final answer
    x = 25,909.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.