Home / 11,874.32-17,811.36-4,947.20

Finding the Fourth Proportional to 11,874.32, 17,811.36 and 4,947.20

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Solution

The fourth proportional to 11,874.32, 17,811.36 and 4,947.20 is: 7,420.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,874.32 : 17,811.36 = 4,947.20 : x
  2. Step 2: Convert to fraction form
    11,874.32/17,811.36 = 4,947.20/x
  3. Step 3: Cross multiply
    11,874.32x = 17,811.36 × 4,947.20
  4. Step 4: Simplify right side
    11,874.32x = 88,116,360.19
  5. Step 5: Solve for x
    x = 88,116,360.19/11,874.32
  6. Step 6: Final answer
    x = 7,420.75

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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.