Home / 21,422.16-32,131.62-6,631.20

Finding the Fourth Proportional to 21,422.16, 32,131.62 and 6,631.20

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Solution

The fourth proportional to 21,422.16, 32,131.62 and 6,631.20 is: 9,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.16 : 32,131.62 = 6,631.20 : x
  2. Step 2: Convert to fraction form
    21,422.16/32,131.62 = 6,631.20/x
  3. Step 3: Cross multiply
    21,422.16x = 32,131.62 × 6,631.20
  4. Step 4: Simplify right side
    21,422.16x = 213,071,198.54
  5. Step 5: Solve for x
    x = 213,071,198.54/21,422.16
  6. Step 6: Final answer
    x = 9,946.30

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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.