Home / 21,709.20-32,515.20-16,762.80

Finding the Fourth Proportional to 21,709.20, 32,515.20 and 16,762.80

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Solution

The fourth proportional to 21,709.20, 32,515.20 and 16,762.80 is: 25,106.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.20 : 32,515.20 = 16,762.80 : x
  2. Step 2: Convert to fraction form
    21,709.20/32,515.20 = 16,762.80/x
  3. Step 3: Cross multiply
    21,709.20x = 32,515.20 × 16,762.80
  4. Step 4: Simplify right side
    21,709.20x = 545,045,794.56
  5. Step 5: Solve for x
    x = 545,045,794.56/21,709.20
  6. Step 6: Final answer
    x = 25,106.67

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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.