Home / 11,357.22-15,670.62-6,640.58

Finding the Fourth Proportional to 11,357.22, 15,670.62 and 6,640.58

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Solution

The fourth proportional to 11,357.22, 15,670.62 and 6,640.58 is: 9,162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,357.22 : 15,670.62 = 6,640.58 : x
  2. Step 2: Convert to fraction form
    11,357.22/15,670.62 = 6,640.58/x
  3. Step 3: Cross multiply
    11,357.22x = 15,670.62 × 6,640.58
  4. Step 4: Simplify right side
    11,357.22x = 104,062,005.76
  5. Step 5: Solve for x
    x = 104,062,005.76/11,357.22
  6. Step 6: Final answer
    x = 9,162.63

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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.