Home / 21,170.32-29,202.12-16,687.12

Finding the Fourth Proportional to 21,170.32, 29,202.12 and 16,687.12

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Solution

The fourth proportional to 21,170.32, 29,202.12 and 16,687.12 is: 23,018.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.32 : 29,202.12 = 16,687.12 : x
  2. Step 2: Convert to fraction form
    21,170.32/29,202.12 = 16,687.12/x
  3. Step 3: Cross multiply
    21,170.32x = 29,202.12 × 16,687.12
  4. Step 4: Simplify right side
    21,170.32x = 487,299,280.69
  5. Step 5: Solve for x
    x = 487,299,280.69/21,170.32
  6. Step 6: Final answer
    x = 23,018.04

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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.