Home / 21,789.15-32,679.48-5,990.12

Finding the Fourth Proportional to 21,789.15, 32,679.48 and 5,990.12

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Solution

The fourth proportional to 21,789.15, 32,679.48 and 5,990.12 is: 8,984.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.15 : 32,679.48 = 5,990.12 : x
  2. Step 2: Convert to fraction form
    21,789.15/32,679.48 = 5,990.12/x
  3. Step 3: Cross multiply
    21,789.15x = 32,679.48 × 5,990.12
  4. Step 4: Simplify right side
    21,789.15x = 195,753,988.35
  5. Step 5: Solve for x
    x = 195,753,988.35/21,789.15
  6. Step 6: Final answer
    x = 8,984.01

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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.