Home / 15,161.20-22,720.20-11,181.40

Finding the Fourth Proportional to 15,161.20, 22,720.20 and 11,181.40

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Solution

The fourth proportional to 15,161.20, 22,720.20 and 11,181.40 is: 16,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.20 : 22,720.20 = 11,181.40 : x
  2. Step 2: Convert to fraction form
    15,161.20/22,720.20 = 11,181.40/x
  3. Step 3: Cross multiply
    15,161.20x = 22,720.20 × 11,181.40
  4. Step 4: Simplify right side
    15,161.20x = 254,043,644.28
  5. Step 5: Solve for x
    x = 254,043,644.28/15,161.20
  6. Step 6: Final answer
    x = 16,756.17

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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.