Home / 21,723.76-32,596.96-11,861.20

Finding the Fourth Proportional to 21,723.76, 32,596.96 and 11,861.20

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Solution

The fourth proportional to 21,723.76, 32,596.96 and 11,861.20 is: 17,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,723.76 : 32,596.96 = 11,861.20 : x
  2. Step 2: Convert to fraction form
    21,723.76/32,596.96 = 11,861.20/x
  3. Step 3: Cross multiply
    21,723.76x = 32,596.96 × 11,861.20
  4. Step 4: Simplify right side
    21,723.76x = 386,639,061.95
  5. Step 5: Solve for x
    x = 386,639,061.95/21,723.76
  6. Step 6: Final answer
    x = 17,797.98

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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.