Home / 11,639.77-15,958.16-11,429.17

Finding the Fourth Proportional to 11,639.77, 15,958.16 and 11,429.17

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Solution

The fourth proportional to 11,639.77, 15,958.16 and 11,429.17 is: 15,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.77 : 15,958.16 = 11,429.17 : x
  2. Step 2: Convert to fraction form
    11,639.77/15,958.16 = 11,429.17/x
  3. Step 3: Cross multiply
    11,639.77x = 15,958.16 × 11,429.17
  4. Step 4: Simplify right side
    11,639.77x = 182,388,523.53
  5. Step 5: Solve for x
    x = 182,388,523.53/11,639.77
  6. Step 6: Final answer
    x = 15,669.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.