Home / 11,439.54-15,785.26-6,403.06

Finding the Fourth Proportional to 11,439.54, 15,785.26 and 6,403.06

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Solution

The fourth proportional to 11,439.54, 15,785.26 and 6,403.06 is: 8,835.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.54 : 15,785.26 = 6,403.06 : x
  2. Step 2: Convert to fraction form
    11,439.54/15,785.26 = 6,403.06/x
  3. Step 3: Cross multiply
    11,439.54x = 15,785.26 × 6,403.06
  4. Step 4: Simplify right side
    11,439.54x = 101,073,966.90
  5. Step 5: Solve for x
    x = 101,073,966.90/11,439.54
  6. Step 6: Final answer
    x = 8,835.49

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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.