Home / 15,354.20-21,161.46-13,224.20

Finding the Fourth Proportional to 15,354.20, 21,161.46 and 13,224.20

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Solution

The fourth proportional to 15,354.20, 21,161.46 and 13,224.20 is: 18,225.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,354.20 : 21,161.46 = 13,224.20 : x
  2. Step 2: Convert to fraction form
    15,354.20/21,161.46 = 13,224.20/x
  3. Step 3: Cross multiply
    15,354.20x = 21,161.46 × 13,224.20
  4. Step 4: Simplify right side
    15,354.20x = 279,843,379.33
  5. Step 5: Solve for x
    x = 279,843,379.33/15,354.20
  6. Step 6: Final answer
    x = 18,225.85

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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.