Home / 31,318.60-43,220.74-22,387.44

Finding the Fourth Proportional to 31,318.60, 43,220.74 and 22,387.44

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Solution

The fourth proportional to 31,318.60, 43,220.74 and 22,387.44 is: 30,895.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.60 : 43,220.74 = 22,387.44 : x
  2. Step 2: Convert to fraction form
    31,318.60/43,220.74 = 22,387.44/x
  3. Step 3: Cross multiply
    31,318.60x = 43,220.74 × 22,387.44
  4. Step 4: Simplify right side
    31,318.60x = 967,601,628.47
  5. Step 5: Solve for x
    x = 967,601,628.47/31,318.60
  6. Step 6: Final answer
    x = 30,895.43

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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.