Home / 21,718.20-32,601.60-16,809.60

Finding the Fourth Proportional to 21,718.20, 32,601.60 and 16,809.60

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Solution

The fourth proportional to 21,718.20, 32,601.60 and 16,809.60 is: 25,233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.20 : 32,601.60 = 16,809.60 : x
  2. Step 2: Convert to fraction form
    21,718.20/32,601.60 = 16,809.60/x
  3. Step 3: Cross multiply
    21,718.20x = 32,601.60 × 16,809.60
  4. Step 4: Simplify right side
    21,718.20x = 548,019,855.36
  5. Step 5: Solve for x
    x = 548,019,855.36/21,718.20
  6. Step 6: Final answer
    x = 25,233.21

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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.