Home / 31,751.36-43,797.06-20,435.66

Finding the Fourth Proportional to 31,751.36, 43,797.06 and 20,435.66

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Solution

The fourth proportional to 31,751.36, 43,797.06 and 20,435.66 is: 28,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,751.36 : 43,797.06 = 20,435.66 : x
  2. Step 2: Convert to fraction form
    31,751.36/43,797.06 = 20,435.66/x
  3. Step 3: Cross multiply
    31,751.36x = 43,797.06 × 20,435.66
  4. Step 4: Simplify right side
    31,751.36x = 895,021,608.17
  5. Step 5: Solve for x
    x = 895,021,608.17/31,751.36
  6. Step 6: Final answer
    x = 28,188.45

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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.