Home / 31,759.11-43,807.73-20,443.32

Finding the Fourth Proportional to 31,759.11, 43,807.73 and 20,443.32

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Solution

The fourth proportional to 31,759.11, 43,807.73 and 20,443.32 is: 28,199.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,759.11 : 43,807.73 = 20,443.32 : x
  2. Step 2: Convert to fraction form
    31,759.11/43,807.73 = 20,443.32/x
  3. Step 3: Cross multiply
    31,759.11x = 43,807.73 × 20,443.32
  4. Step 4: Simplify right side
    31,759.11x = 895,575,340.65
  5. Step 5: Solve for x
    x = 895,575,340.65/31,759.11
  6. Step 6: Final answer
    x = 28,199.01

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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.