Home / 21,919.32-32,880.80-9,439.65

Finding the Fourth Proportional to 21,919.32, 32,880.80 and 9,439.65

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Solution

The fourth proportional to 21,919.32, 32,880.80 and 9,439.65 is: 14,160.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.32 : 32,880.80 = 9,439.65 : x
  2. Step 2: Convert to fraction form
    21,919.32/32,880.80 = 9,439.65/x
  3. Step 3: Cross multiply
    21,919.32x = 32,880.80 × 9,439.65
  4. Step 4: Simplify right side
    21,919.32x = 310,383,243.72
  5. Step 5: Solve for x
    x = 310,383,243.72/21,919.32
  6. Step 6: Final answer
    x = 14,160.26

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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.