Home / 10,220.09-15,322.37-5,286.59

Finding the Fourth Proportional to 10,220.09, 15,322.37 and 5,286.59

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Solution

The fourth proportional to 10,220.09, 15,322.37 and 5,286.59 is: 7,925.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.09 : 15,322.37 = 5,286.59 : x
  2. Step 2: Convert to fraction form
    10,220.09/15,322.37 = 5,286.59/x
  3. Step 3: Cross multiply
    10,220.09x = 15,322.37 × 5,286.59
  4. Step 4: Simplify right side
    10,220.09x = 81,002,984.97
  5. Step 5: Solve for x
    x = 81,002,984.97/10,220.09
  6. Step 6: Final answer
    x = 7,925.86

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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.