Home / 21,971.04-32,949.92-8,121.12

Finding the Fourth Proportional to 21,971.04, 32,949.92 and 8,121.12

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Solution

The fourth proportional to 21,971.04, 32,949.92 and 8,121.12 is: 12,179.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.04 : 32,949.92 = 8,121.12 : x
  2. Step 2: Convert to fraction form
    21,971.04/32,949.92 = 8,121.12/x
  3. Step 3: Cross multiply
    21,971.04x = 32,949.92 × 8,121.12
  4. Step 4: Simplify right side
    21,971.04x = 267,590,254.31
  5. Step 5: Solve for x
    x = 267,590,254.31/21,971.04
  6. Step 6: Final answer
    x = 12,179.23

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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.