Home / 21,200.96-29,252.04-13,240.28

Finding the Fourth Proportional to 21,200.96, 29,252.04 and 13,240.28

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Solution

The fourth proportional to 21,200.96, 29,252.04 and 13,240.28 is: 18,268.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.96 : 29,252.04 = 13,240.28 : x
  2. Step 2: Convert to fraction form
    21,200.96/29,252.04 = 13,240.28/x
  3. Step 3: Cross multiply
    21,200.96x = 29,252.04 × 13,240.28
  4. Step 4: Simplify right side
    21,200.96x = 387,305,200.17
  5. Step 5: Solve for x
    x = 387,305,200.17/21,200.96
  6. Step 6: Final answer
    x = 18,268.29

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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.