Home / 21,939.40-32,901.90-8,086.60

Finding the Fourth Proportional to 21,939.40, 32,901.90 and 8,086.60

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Solution

The fourth proportional to 21,939.40, 32,901.90 and 8,086.60 is: 12,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.40 : 32,901.90 = 8,086.60 : x
  2. Step 2: Convert to fraction form
    21,939.40/32,901.90 = 8,086.60/x
  3. Step 3: Cross multiply
    21,939.40x = 32,901.90 × 8,086.60
  4. Step 4: Simplify right side
    21,939.40x = 266,064,504.54
  5. Step 5: Solve for x
    x = 266,064,504.54/21,939.40
  6. Step 6: Final answer
    x = 12,127.25

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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.