Home / 21,786.20-32,630.70-16,839.80

Finding the Fourth Proportional to 21,786.20, 32,630.70 and 16,839.80

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Solution

The fourth proportional to 21,786.20, 32,630.70 and 16,839.80 is: 25,222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.20 : 32,630.70 = 16,839.80 : x
  2. Step 2: Convert to fraction form
    21,786.20/32,630.70 = 16,839.80/x
  3. Step 3: Cross multiply
    21,786.20x = 32,630.70 × 16,839.80
  4. Step 4: Simplify right side
    21,786.20x = 549,494,461.86
  5. Step 5: Solve for x
    x = 549,494,461.86/21,786.20
  6. Step 6: Final answer
    x = 25,222.13

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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.