Home / 22,157.88-30,577.89-12,728.26

Finding the Fourth Proportional to 22,157.88, 30,577.89 and 12,728.26

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Solution

The fourth proportional to 22,157.88, 30,577.89 and 12,728.26 is: 17,565.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,157.88 : 30,577.89 = 12,728.26 : x
  2. Step 2: Convert to fraction form
    22,157.88/30,577.89 = 12,728.26/x
  3. Step 3: Cross multiply
    22,157.88x = 30,577.89 × 12,728.26
  4. Step 4: Simplify right side
    22,157.88x = 389,203,334.17
  5. Step 5: Solve for x
    x = 389,203,334.17/22,157.88
  6. Step 6: Final answer
    x = 17,565.01

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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.