Home / 15,134.20-20,885.79-9,162.49

Finding the Fourth Proportional to 15,134.20, 20,885.79 and 9,162.49

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Solution

The fourth proportional to 15,134.20, 20,885.79 and 9,162.49 is: 12,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.20 : 20,885.79 = 9,162.49 : x
  2. Step 2: Convert to fraction form
    15,134.20/20,885.79 = 9,162.49/x
  3. Step 3: Cross multiply
    15,134.20x = 20,885.79 × 9,162.49
  4. Step 4: Simplify right side
    15,134.20x = 191,365,842.02
  5. Step 5: Solve for x
    x = 191,365,842.02/15,134.20
  6. Step 6: Final answer
    x = 12,644.60

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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.