Home / 11,686.38-17,440.11-10,439.79

Finding the Fourth Proportional to 11,686.38, 17,440.11 and 10,439.79

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Solution

The fourth proportional to 11,686.38, 17,440.11 and 10,439.79 is: 15,579.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.38 : 17,440.11 = 10,439.79 : x
  2. Step 2: Convert to fraction form
    11,686.38/17,440.11 = 10,439.79/x
  3. Step 3: Cross multiply
    11,686.38x = 17,440.11 × 10,439.79
  4. Step 4: Simplify right side
    11,686.38x = 182,071,085.98
  5. Step 5: Solve for x
    x = 182,071,085.98/11,686.38
  6. Step 6: Final answer
    x = 15,579.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.