Home / 31,839.80-43,838.55-28,887.35

Finding the Fourth Proportional to 31,839.80, 43,838.55 and 28,887.35

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Solution

The fourth proportional to 31,839.80, 43,838.55 and 28,887.35 is: 39,773.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.80 : 43,838.55 = 28,887.35 : x
  2. Step 2: Convert to fraction form
    31,839.80/43,838.55 = 28,887.35/x
  3. Step 3: Cross multiply
    31,839.80x = 43,838.55 × 28,887.35
  4. Step 4: Simplify right side
    31,839.80x = 1,266,379,318.15
  5. Step 5: Solve for x
    x = 1,266,379,318.15/31,839.80
  6. Step 6: Final answer
    x = 39,773.48

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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.