Home / 31,758.86-43,807.38-20,443.10

Finding the Fourth Proportional to 31,758.86, 43,807.38 and 20,443.10

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Solution

The fourth proportional to 31,758.86, 43,807.38 and 20,443.10 is: 28,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,758.86 : 43,807.38 = 20,443.10 : x
  2. Step 2: Convert to fraction form
    31,758.86/43,807.38 = 20,443.10/x
  3. Step 3: Cross multiply
    31,758.86x = 43,807.38 × 20,443.10
  4. Step 4: Simplify right side
    31,758.86x = 895,558,650.08
  5. Step 5: Solve for x
    x = 895,558,650.08/31,758.86
  6. Step 6: Final answer
    x = 28,198.70

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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.