Home / 11,185.10-15,438.28-6,406.59

Finding the Fourth Proportional to 11,185.10, 15,438.28 and 6,406.59

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Solution

The fourth proportional to 11,185.10, 15,438.28 and 6,406.59 is: 8,842.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.10 : 15,438.28 = 6,406.59 : x
  2. Step 2: Convert to fraction form
    11,185.10/15,438.28 = 6,406.59/x
  3. Step 3: Cross multiply
    11,185.10x = 15,438.28 × 6,406.59
  4. Step 4: Simplify right side
    11,185.10x = 98,906,643.45
  5. Step 5: Solve for x
    x = 98,906,643.45/11,185.10
  6. Step 6: Final answer
    x = 8,842.72

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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.