Home / 21,693.72-29,937.42-13,727.64

Finding the Fourth Proportional to 21,693.72, 29,937.42 and 13,727.64

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Solution

The fourth proportional to 21,693.72, 29,937.42 and 13,727.64 is: 18,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.72 : 29,937.42 = 13,727.64 : x
  2. Step 2: Convert to fraction form
    21,693.72/29,937.42 = 13,727.64/x
  3. Step 3: Cross multiply
    21,693.72x = 29,937.42 × 13,727.64
  4. Step 4: Simplify right side
    21,693.72x = 410,970,124.29
  5. Step 5: Solve for x
    x = 410,970,124.29/21,693.72
  6. Step 6: Final answer
    x = 18,944.20

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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.