Home / 31,329.32-43,242-21,274.52

Finding the Fourth Proportional to 31,329.32, 43,242 and 21,274.52

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Solution

The fourth proportional to 31,329.32, 43,242 and 21,274.52 is: 29,363.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,329.32 : 43,242 = 21,274.52 : x
  2. Step 2: Convert to fraction form
    31,329.32/43,242 = 21,274.52/x
  3. Step 3: Cross multiply
    31,329.32x = 43,242 × 21,274.52
  4. Step 4: Simplify right side
    31,329.32x = 919,952,793.84
  5. Step 5: Solve for x
    x = 919,952,793.84/31,329.32
  6. Step 6: Final answer
    x = 29,363.96

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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.