Home / 25,490.70-38,064.27-20,819.82

Finding the Fourth Proportional to 25,490.70, 38,064.27 and 20,819.82

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Solution

The fourth proportional to 25,490.70, 38,064.27 and 20,819.82 is: 31,089.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,490.70 : 38,064.27 = 20,819.82 : x
  2. Step 2: Convert to fraction form
    25,490.70/38,064.27 = 20,819.82/x
  3. Step 3: Cross multiply
    25,490.70x = 38,064.27 × 20,819.82
  4. Step 4: Simplify right side
    25,490.70x = 792,491,249.83
  5. Step 5: Solve for x
    x = 792,491,249.83/25,490.70
  6. Step 6: Final answer
    x = 31,089.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.