Home / 11,253.38-15,536.32-7,721.78

Finding the Fourth Proportional to 11,253.38, 15,536.32 and 7,721.78

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Solution

The fourth proportional to 11,253.38, 15,536.32 and 7,721.78 is: 10,660.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,253.38 : 15,536.32 = 7,721.78 : x
  2. Step 2: Convert to fraction form
    11,253.38/15,536.32 = 7,721.78/x
  3. Step 3: Cross multiply
    11,253.38x = 15,536.32 × 7,721.78
  4. Step 4: Simplify right side
    11,253.38x = 119,968,045.05
  5. Step 5: Solve for x
    x = 119,968,045.05/11,253.38
  6. Step 6: Final answer
    x = 10,660.62

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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.