Home / 31,339.18-43,249.98-20,710.36

Finding the Fourth Proportional to 31,339.18, 43,249.98 and 20,710.36

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Solution

The fourth proportional to 31,339.18, 43,249.98 and 20,710.36 is: 28,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,339.18 : 43,249.98 = 20,710.36 : x
  2. Step 2: Convert to fraction form
    31,339.18/43,249.98 = 20,710.36/x
  3. Step 3: Cross multiply
    31,339.18x = 43,249.98 × 20,710.36
  4. Step 4: Simplify right side
    31,339.18x = 895,722,655.79
  5. Step 5: Solve for x
    x = 895,722,655.79/31,339.18
  6. Step 6: Final answer
    x = 28,581.56

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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.