Home / 18,867.36-28,276.62-7,761.48

Finding the Fourth Proportional to 18,867.36, 28,276.62 and 7,761.48

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Solution

The fourth proportional to 18,867.36, 28,276.62 and 7,761.48 is: 11,632.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.36 : 28,276.62 = 7,761.48 : x
  2. Step 2: Convert to fraction form
    18,867.36/28,276.62 = 7,761.48/x
  3. Step 3: Cross multiply
    18,867.36x = 28,276.62 × 7,761.48
  4. Step 4: Simplify right side
    18,867.36x = 219,468,420.60
  5. Step 5: Solve for x
    x = 219,468,420.60/18,867.36
  6. Step 6: Final answer
    x = 11,632.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.