Home / 11,287.76-15,578.19-6,507.81

Finding the Fourth Proportional to 11,287.76, 15,578.19 and 6,507.81

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Solution

The fourth proportional to 11,287.76, 15,578.19 and 6,507.81 is: 8,981.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.76 : 15,578.19 = 6,507.81 : x
  2. Step 2: Convert to fraction form
    11,287.76/15,578.19 = 6,507.81/x
  3. Step 3: Cross multiply
    11,287.76x = 15,578.19 × 6,507.81
  4. Step 4: Simplify right side
    11,287.76x = 101,379,900.66
  5. Step 5: Solve for x
    x = 101,379,900.66/11,287.76
  6. Step 6: Final answer
    x = 8,981.41

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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.