Home / 21,168.04-29,213.22-12,217.18

Finding the Fourth Proportional to 21,168.04, 29,213.22 and 12,217.18

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Solution

The fourth proportional to 21,168.04, 29,213.22 and 12,217.18 is: 16,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.04 : 29,213.22 = 12,217.18 : x
  2. Step 2: Convert to fraction form
    21,168.04/29,213.22 = 12,217.18/x
  3. Step 3: Cross multiply
    21,168.04x = 29,213.22 × 12,217.18
  4. Step 4: Simplify right side
    21,168.04x = 356,903,167.12
  5. Step 5: Solve for x
    x = 356,903,167.12/21,168.04
  6. Step 6: Final answer
    x = 16,860.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.