Home / 11,322.07-15,639.42-9,439.81

Finding the Fourth Proportional to 11,322.07, 15,639.42 and 9,439.81

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Solution

The fourth proportional to 11,322.07, 15,639.42 and 9,439.81 is: 13,039.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,322.07 : 15,639.42 = 9,439.81 : x
  2. Step 2: Convert to fraction form
    11,322.07/15,639.42 = 9,439.81/x
  3. Step 3: Cross multiply
    11,322.07x = 15,639.42 × 9,439.81
  4. Step 4: Simplify right side
    11,322.07x = 147,633,153.31
  5. Step 5: Solve for x
    x = 147,633,153.31/11,322.07
  6. Step 6: Final answer
    x = 13,039.41

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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.