Home / 15,189.44-20,962.14-9,221.72

Finding the Fourth Proportional to 15,189.44, 20,962.14 and 9,221.72

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Solution

The fourth proportional to 15,189.44, 20,962.14 and 9,221.72 is: 12,726.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.44 : 20,962.14 = 9,221.72 : x
  2. Step 2: Convert to fraction form
    15,189.44/20,962.14 = 9,221.72/x
  3. Step 3: Cross multiply
    15,189.44x = 20,962.14 × 9,221.72
  4. Step 4: Simplify right side
    15,189.44x = 193,306,985.68
  5. Step 5: Solve for x
    x = 193,306,985.68/15,189.44
  6. Step 6: Final answer
    x = 12,726.41

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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.