Home / 11,439.14-15,785.90-6,403.82

Finding the Fourth Proportional to 11,439.14, 15,785.90 and 6,403.82

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Solution

The fourth proportional to 11,439.14, 15,785.90 and 6,403.82 is: 8,837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.14 : 15,785.90 = 6,403.82 : x
  2. Step 2: Convert to fraction form
    11,439.14/15,785.90 = 6,403.82/x
  3. Step 3: Cross multiply
    11,439.14x = 15,785.90 × 6,403.82
  4. Step 4: Simplify right side
    11,439.14x = 101,090,062.14
  5. Step 5: Solve for x
    x = 101,090,062.14/11,439.14
  6. Step 6: Final answer
    x = 8,837.21

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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.