Home / 31,690.20-43,753.86-28,322.22

Finding the Fourth Proportional to 31,690.20, 43,753.86 and 28,322.22

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Solution

The fourth proportional to 31,690.20, 43,753.86 and 28,322.22 is: 39,103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.20 : 43,753.86 = 28,322.22 : x
  2. Step 2: Convert to fraction form
    31,690.20/43,753.86 = 28,322.22/x
  3. Step 3: Cross multiply
    31,690.20x = 43,753.86 × 28,322.22
  4. Step 4: Simplify right side
    31,690.20x = 1,239,206,448.77
  5. Step 5: Solve for x
    x = 1,239,206,448.77/31,690.20
  6. Step 6: Final answer
    x = 39,103.77

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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.