Home / 21,479.16-32,219.94-6,690.18

Finding the Fourth Proportional to 21,479.16, 32,219.94 and 6,690.18

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Solution

The fourth proportional to 21,479.16, 32,219.94 and 6,690.18 is: 10,035.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.16 : 32,219.94 = 6,690.18 : x
  2. Step 2: Convert to fraction form
    21,479.16/32,219.94 = 6,690.18/x
  3. Step 3: Cross multiply
    21,479.16x = 32,219.94 × 6,690.18
  4. Step 4: Simplify right side
    21,479.16x = 215,557,198.19
  5. Step 5: Solve for x
    x = 215,557,198.19/21,479.16
  6. Step 6: Final answer
    x = 10,035.64

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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.