Home / 21,172.92-29,210.22-13,617.96

Finding the Fourth Proportional to 21,172.92, 29,210.22 and 13,617.96

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Solution

The fourth proportional to 21,172.92, 29,210.22 and 13,617.96 is: 18,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.92 : 29,210.22 = 13,617.96 : x
  2. Step 2: Convert to fraction form
    21,172.92/29,210.22 = 13,617.96/x
  3. Step 3: Cross multiply
    21,172.92x = 29,210.22 × 13,617.96
  4. Step 4: Simplify right side
    21,172.92x = 397,783,607.55
  5. Step 5: Solve for x
    x = 397,783,607.55/21,172.92
  6. Step 6: Final answer
    x = 18,787.38

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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.