Home / 21,168.68-29,204.56-13,614.02

Finding the Fourth Proportional to 21,168.68, 29,204.56 and 13,614.02

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Solution

The fourth proportional to 21,168.68, 29,204.56 and 13,614.02 is: 18,782.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.68 : 29,204.56 = 13,614.02 : x
  2. Step 2: Convert to fraction form
    21,168.68/29,204.56 = 13,614.02/x
  3. Step 3: Cross multiply
    21,168.68x = 29,204.56 × 13,614.02
  4. Step 4: Simplify right side
    21,168.68x = 397,591,463.93
  5. Step 5: Solve for x
    x = 397,591,463.93/21,168.68
  6. Step 6: Final answer
    x = 18,782.06

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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.