Home / 15,913.28-21,960.43-8,743.12

Finding the Fourth Proportional to 15,913.28, 21,960.43 and 8,743.12

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Solution

The fourth proportional to 15,913.28, 21,960.43 and 8,743.12 is: 12,065.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.28 : 21,960.43 = 8,743.12 : x
  2. Step 2: Convert to fraction form
    15,913.28/21,960.43 = 8,743.12/x
  3. Step 3: Cross multiply
    15,913.28x = 21,960.43 × 8,743.12
  4. Step 4: Simplify right side
    15,913.28x = 192,002,597.98
  5. Step 5: Solve for x
    x = 192,002,597.98/15,913.28
  6. Step 6: Final answer
    x = 12,065.56

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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.