Home / 11,436.80-15,785.28-6,723.81

Finding the Fourth Proportional to 11,436.80, 15,785.28 and 6,723.81

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Solution

The fourth proportional to 11,436.80, 15,785.28 and 6,723.81 is: 9,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.80 : 15,785.28 = 6,723.81 : x
  2. Step 2: Convert to fraction form
    11,436.80/15,785.28 = 6,723.81/x
  3. Step 3: Cross multiply
    11,436.80x = 15,785.28 × 6,723.81
  4. Step 4: Simplify right side
    11,436.80x = 106,137,223.52
  5. Step 5: Solve for x
    x = 106,137,223.52/11,436.80
  6. Step 6: Final answer
    x = 9,280.33

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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.