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Finding the Fourth Proportional to 15,049.95, 20,768.86 and 8,335.99

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Solution

The fourth proportional to 15,049.95, 20,768.86 and 8,335.99 is: 11,503.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,049.95 : 20,768.86 = 8,335.99 : x
  2. Step 2: Convert to fraction form
    15,049.95/20,768.86 = 8,335.99/x
  3. Step 3: Cross multiply
    15,049.95x = 20,768.86 × 8,335.99
  4. Step 4: Simplify right side
    15,049.95x = 173,129,009.27
  5. Step 5: Solve for x
    x = 173,129,009.27/15,049.95
  6. Step 6: Final answer
    x = 11,503.63

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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.