Home / 21,744.72-29,998.08-13,366.08

Finding the Fourth Proportional to 21,744.72, 29,998.08 and 13,366.08

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Solution

The fourth proportional to 21,744.72, 29,998.08 and 13,366.08 is: 18,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.72 : 29,998.08 = 13,366.08 : x
  2. Step 2: Convert to fraction form
    21,744.72/29,998.08 = 13,366.08/x
  3. Step 3: Cross multiply
    21,744.72x = 29,998.08 × 13,366.08
  4. Step 4: Simplify right side
    21,744.72x = 400,956,737.13
  5. Step 5: Solve for x
    x = 400,956,737.13/21,744.72
  6. Step 6: Final answer
    x = 18,439.27

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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.