Home / 21,632.09-32,257.19-20,861.16

Finding the Fourth Proportional to 21,632.09, 32,257.19 and 20,861.16

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Solution

The fourth proportional to 21,632.09, 32,257.19 and 20,861.16 is: 31,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.09 : 32,257.19 = 20,861.16 : x
  2. Step 2: Convert to fraction form
    21,632.09/32,257.19 = 20,861.16/x
  3. Step 3: Cross multiply
    21,632.09x = 32,257.19 × 20,861.16
  4. Step 4: Simplify right side
    21,632.09x = 672,922,297.43
  5. Step 5: Solve for x
    x = 672,922,297.43/21,632.09
  6. Step 6: Final answer
    x = 31,107.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.