Home / 15,256.96-21,049.28-9,286.72

Finding the Fourth Proportional to 15,256.96, 21,049.28 and 9,286.72

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Solution

The fourth proportional to 15,256.96, 21,049.28 and 9,286.72 is: 12,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.96 : 21,049.28 = 9,286.72 : x
  2. Step 2: Convert to fraction form
    15,256.96/21,049.28 = 9,286.72/x
  3. Step 3: Cross multiply
    15,256.96x = 21,049.28 × 9,286.72
  4. Step 4: Simplify right side
    15,256.96x = 195,478,769.56
  5. Step 5: Solve for x
    x = 195,478,769.56/15,256.96
  6. Step 6: Final answer
    x = 12,812.43

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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.