Home / 11,118.67-15,345.66-6,405.69

Finding the Fourth Proportional to 11,118.67, 15,345.66 and 6,405.69

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Solution

The fourth proportional to 11,118.67, 15,345.66 and 6,405.69 is: 8,840.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.67 : 15,345.66 = 6,405.69 : x
  2. Step 2: Convert to fraction form
    11,118.67/15,345.66 = 6,405.69/x
  3. Step 3: Cross multiply
    11,118.67x = 15,345.66 × 6,405.69
  4. Step 4: Simplify right side
    11,118.67x = 98,299,540.81
  5. Step 5: Solve for x
    x = 98,299,540.81/11,118.67
  6. Step 6: Final answer
    x = 8,840.94

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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.