Home / 25,864.78-35,687.37-18,778.90

Finding the Fourth Proportional to 25,864.78, 35,687.37 and 18,778.90

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Solution

The fourth proportional to 25,864.78, 35,687.37 and 18,778.90 is: 25,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,864.78 : 35,687.37 = 18,778.90 : x
  2. Step 2: Convert to fraction form
    25,864.78/35,687.37 = 18,778.90/x
  3. Step 3: Cross multiply
    25,864.78x = 35,687.37 × 18,778.90
  4. Step 4: Simplify right side
    25,864.78x = 670,169,552.49
  5. Step 5: Solve for x
    x = 670,169,552.49/25,864.78
  6. Step 6: Final answer
    x = 25,910.51

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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.