Home / 31,331.96-43,240.08-20,702.96

Finding the Fourth Proportional to 31,331.96, 43,240.08 and 20,702.96

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Solution

The fourth proportional to 31,331.96, 43,240.08 and 20,702.96 is: 28,571.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.96 : 43,240.08 = 20,702.96 : x
  2. Step 2: Convert to fraction form
    31,331.96/43,240.08 = 20,702.96/x
  3. Step 3: Cross multiply
    31,331.96x = 43,240.08 × 20,702.96
  4. Step 4: Simplify right side
    31,331.96x = 895,197,646.64
  5. Step 5: Solve for x
    x = 895,197,646.64/31,331.96
  6. Step 6: Final answer
    x = 28,571.39

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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.