Home / 21,255.96-31,877.46-5,671.56

Finding the Fourth Proportional to 21,255.96, 31,877.46 and 5,671.56

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Solution

The fourth proportional to 21,255.96, 31,877.46 and 5,671.56 is: 8,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.96 : 31,877.46 = 5,671.56 : x
  2. Step 2: Convert to fraction form
    21,255.96/31,877.46 = 5,671.56/x
  3. Step 3: Cross multiply
    21,255.96x = 31,877.46 × 5,671.56
  4. Step 4: Simplify right side
    21,255.96x = 180,794,927.04
  5. Step 5: Solve for x
    x = 180,794,927.04/21,255.96
  6. Step 6: Final answer
    x = 8,505.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.