Home / 13,222.39-18,248.05-7,255.22

Finding the Fourth Proportional to 13,222.39, 18,248.05 and 7,255.22

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Solution

The fourth proportional to 13,222.39, 18,248.05 and 7,255.22 is: 10,012.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.39 : 18,248.05 = 7,255.22 : x
  2. Step 2: Convert to fraction form
    13,222.39/18,248.05 = 7,255.22/x
  3. Step 3: Cross multiply
    13,222.39x = 18,248.05 × 7,255.22
  4. Step 4: Simplify right side
    13,222.39x = 132,393,644.80
  5. Step 5: Solve for x
    x = 132,393,644.80/13,222.39
  6. Step 6: Final answer
    x = 10,012.84

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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.