Home / 15,844.68-21,865.82-8,771.49

Finding the Fourth Proportional to 15,844.68, 21,865.82 and 8,771.49

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Solution

The fourth proportional to 15,844.68, 21,865.82 and 8,771.49 is: 12,104.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.68 : 21,865.82 = 8,771.49 : x
  2. Step 2: Convert to fraction form
    15,844.68/21,865.82 = 8,771.49/x
  3. Step 3: Cross multiply
    15,844.68x = 21,865.82 × 8,771.49
  4. Step 4: Simplify right side
    15,844.68x = 191,795,777.61
  5. Step 5: Solve for x
    x = 191,795,777.61/15,844.68
  6. Step 6: Final answer
    x = 12,104.74

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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.