Home / 21,180.44-31,773.40-6,390.84

Finding the Fourth Proportional to 21,180.44, 31,773.40 and 6,390.84

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Solution

The fourth proportional to 21,180.44, 31,773.40 and 6,390.84 is: 9,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.44 : 31,773.40 = 6,390.84 : x
  2. Step 2: Convert to fraction form
    21,180.44/31,773.40 = 6,390.84/x
  3. Step 3: Cross multiply
    21,180.44x = 31,773.40 × 6,390.84
  4. Step 4: Simplify right side
    21,180.44x = 203,058,715.66
  5. Step 5: Solve for x
    x = 203,058,715.66/21,180.44
  6. Step 6: Final answer
    x = 9,587.09

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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.