Home / 15,027.09-20,736.77-8,220.99

Finding the Fourth Proportional to 15,027.09, 20,736.77 and 8,220.99

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Solution

The fourth proportional to 15,027.09, 20,736.77 and 8,220.99 is: 11,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.09 : 20,736.77 = 8,220.99 : x
  2. Step 2: Convert to fraction form
    15,027.09/20,736.77 = 8,220.99/x
  3. Step 3: Cross multiply
    15,027.09x = 20,736.77 × 8,220.99
  4. Step 4: Simplify right side
    15,027.09x = 170,476,737.70
  5. Step 5: Solve for x
    x = 170,476,737.70/15,027.09
  6. Step 6: Final answer
    x = 11,344.63

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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.