Home / 21,179.58-31,773.51-6,389.70

Finding the Fourth Proportional to 21,179.58, 31,773.51 and 6,389.70

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Solution

The fourth proportional to 21,179.58, 31,773.51 and 6,389.70 is: 9,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.58 : 31,773.51 = 6,389.70 : x
  2. Step 2: Convert to fraction form
    21,179.58/31,773.51 = 6,389.70/x
  3. Step 3: Cross multiply
    21,179.58x = 31,773.51 × 6,389.70
  4. Step 4: Simplify right side
    21,179.58x = 203,023,196.85
  5. Step 5: Solve for x
    x = 203,023,196.85/21,179.58
  6. Step 6: Final answer
    x = 9,585.80

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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.