Home / 31,249.87-43,139.05-19,934.91

Finding the Fourth Proportional to 31,249.87, 43,139.05 and 19,934.91

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Solution

The fourth proportional to 31,249.87, 43,139.05 and 19,934.91 is: 27,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,249.87 : 43,139.05 = 19,934.91 : x
  2. Step 2: Convert to fraction form
    31,249.87/43,139.05 = 19,934.91/x
  3. Step 3: Cross multiply
    31,249.87x = 43,139.05 × 19,934.91
  4. Step 4: Simplify right side
    31,249.87x = 859,973,029.40
  5. Step 5: Solve for x
    x = 859,973,029.40/31,249.87
  6. Step 6: Final answer
    x = 27,519.25

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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.