Home / 11,115.26-15,339.40-6,866.18

Finding the Fourth Proportional to 11,115.26, 15,339.40 and 6,866.18

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Solution

The fourth proportional to 11,115.26, 15,339.40 and 6,866.18 is: 9,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.26 : 15,339.40 = 6,866.18 : x
  2. Step 2: Convert to fraction form
    11,115.26/15,339.40 = 6,866.18/x
  3. Step 3: Cross multiply
    11,115.26x = 15,339.40 × 6,866.18
  4. Step 4: Simplify right side
    11,115.26x = 105,323,081.49
  5. Step 5: Solve for x
    x = 105,323,081.49/11,115.26
  6. Step 6: Final answer
    x = 9,475.54

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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.