Home / 11,438.75-15,785.63-6,403.17

Finding the Fourth Proportional to 11,438.75, 15,785.63 and 6,403.17

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Solution

The fourth proportional to 11,438.75, 15,785.63 and 6,403.17 is: 8,836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.75 : 15,785.63 = 6,403.17 : x
  2. Step 2: Convert to fraction form
    11,438.75/15,785.63 = 6,403.17/x
  3. Step 3: Cross multiply
    11,438.75x = 15,785.63 × 6,403.17
  4. Step 4: Simplify right side
    11,438.75x = 101,078,040.43
  5. Step 5: Solve for x
    x = 101,078,040.43/11,438.75
  6. Step 6: Final answer
    x = 8,836.46

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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.