Home / 15,190.30-20,962.12-8,291.20

Finding the Fourth Proportional to 15,190.30, 20,962.12 and 8,291.20

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Solution

The fourth proportional to 15,190.30, 20,962.12 and 8,291.20 is: 11,441.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.30 : 20,962.12 = 8,291.20 : x
  2. Step 2: Convert to fraction form
    15,190.30/20,962.12 = 8,291.20/x
  3. Step 3: Cross multiply
    15,190.30x = 20,962.12 × 8,291.20
  4. Step 4: Simplify right side
    15,190.30x = 173,801,129.34
  5. Step 5: Solve for x
    x = 173,801,129.34/15,190.30
  6. Step 6: Final answer
    x = 11,441.59

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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.