Home / 21,719.20-32,530.20-16,772.80

Finding the Fourth Proportional to 21,719.20, 32,530.20 and 16,772.80

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Solution

The fourth proportional to 21,719.20, 32,530.20 and 16,772.80 is: 25,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.20 : 32,530.20 = 16,772.80 : x
  2. Step 2: Convert to fraction form
    21,719.20/32,530.20 = 16,772.80/x
  3. Step 3: Cross multiply
    21,719.20x = 32,530.20 × 16,772.80
  4. Step 4: Simplify right side
    21,719.20x = 545,622,538.56
  5. Step 5: Solve for x
    x = 545,622,538.56/21,719.20
  6. Step 6: Final answer
    x = 25,121.67

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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.