Home / 13,451.05-20,149.84-10,515.61

Finding the Fourth Proportional to 13,451.05, 20,149.84 and 10,515.61

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Solution

The fourth proportional to 13,451.05, 20,149.84 and 10,515.61 is: 15,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.05 : 20,149.84 = 10,515.61 : x
  2. Step 2: Convert to fraction form
    13,451.05/20,149.84 = 10,515.61/x
  3. Step 3: Cross multiply
    13,451.05x = 20,149.84 × 10,515.61
  4. Step 4: Simplify right side
    13,451.05x = 211,887,859.00
  5. Step 5: Solve for x
    x = 211,887,859.00/13,451.05
  6. Step 6: Final answer
    x = 15,752.51

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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.