Home / 21,202.72-29,253.84-13,253.04

Finding the Fourth Proportional to 21,202.72, 29,253.84 and 13,253.04

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Solution

The fourth proportional to 21,202.72, 29,253.84 and 13,253.04 is: 18,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.72 : 29,253.84 = 13,253.04 : x
  2. Step 2: Convert to fraction form
    21,202.72/29,253.84 = 13,253.04/x
  3. Step 3: Cross multiply
    21,202.72x = 29,253.84 × 13,253.04
  4. Step 4: Simplify right side
    21,202.72x = 387,702,311.67
  5. Step 5: Solve for x
    x = 387,702,311.67/21,202.72
  6. Step 6: Final answer
    x = 18,285.50

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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.