Home / 31,824.92-43,901.76-21,612.36

Finding the Fourth Proportional to 31,824.92, 43,901.76 and 21,612.36

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Solution

The fourth proportional to 31,824.92, 43,901.76 and 21,612.36 is: 29,813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,824.92 : 43,901.76 = 21,612.36 : x
  2. Step 2: Convert to fraction form
    31,824.92/43,901.76 = 21,612.36/x
  3. Step 3: Cross multiply
    31,824.92x = 43,901.76 × 21,612.36
  4. Step 4: Simplify right side
    31,824.92x = 948,820,641.75
  5. Step 5: Solve for x
    x = 948,820,641.75/31,824.92
  6. Step 6: Final answer
    x = 29,813.76

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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.