Home / 22,209.50-30,649.23-12,138.04

Finding the Fourth Proportional to 22,209.50, 30,649.23 and 12,138.04

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Solution

The fourth proportional to 22,209.50, 30,649.23 and 12,138.04 is: 16,750.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.50 : 30,649.23 = 12,138.04 : x
  2. Step 2: Convert to fraction form
    22,209.50/30,649.23 = 12,138.04/x
  3. Step 3: Cross multiply
    22,209.50x = 30,649.23 × 12,138.04
  4. Step 4: Simplify right side
    22,209.50x = 372,021,579.71
  5. Step 5: Solve for x
    x = 372,021,579.71/22,209.50
  6. Step 6: Final answer
    x = 16,750.56

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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.