Home / 31,519.70-43,514.99-20,923.82

Finding the Fourth Proportional to 31,519.70, 43,514.99 and 20,923.82

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Solution

The fourth proportional to 31,519.70, 43,514.99 and 20,923.82 is: 28,886.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,519.70 : 43,514.99 = 20,923.82 : x
  2. Step 2: Convert to fraction form
    31,519.70/43,514.99 = 20,923.82/x
  3. Step 3: Cross multiply
    31,519.70x = 43,514.99 × 20,923.82
  4. Step 4: Simplify right side
    31,519.70x = 910,499,495.87
  5. Step 5: Solve for x
    x = 910,499,495.87/31,519.70
  6. Step 6: Final answer
    x = 28,886.68

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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.