Home / 21,173.42-29,217.20-12,223.80

Finding the Fourth Proportional to 21,173.42, 29,217.20 and 12,223.80

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Solution

The fourth proportional to 21,173.42, 29,217.20 and 12,223.80 is: 16,867.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.42 : 29,217.20 = 12,223.80 : x
  2. Step 2: Convert to fraction form
    21,173.42/29,217.20 = 12,223.80/x
  3. Step 3: Cross multiply
    21,173.42x = 29,217.20 × 12,223.80
  4. Step 4: Simplify right side
    21,173.42x = 357,145,148.24
  5. Step 5: Solve for x
    x = 357,145,148.24/21,173.42
  6. Step 6: Final answer
    x = 16,867.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.