Home / 22,129.82-30,577.99-17,690.21

Finding the Fourth Proportional to 22,129.82, 30,577.99 and 17,690.21

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Solution

The fourth proportional to 22,129.82, 30,577.99 and 17,690.21 is: 24,443.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,129.82 : 30,577.99 = 17,690.21 : x
  2. Step 2: Convert to fraction form
    22,129.82/30,577.99 = 17,690.21/x
  3. Step 3: Cross multiply
    22,129.82x = 30,577.99 × 17,690.21
  4. Step 4: Simplify right side
    22,129.82x = 540,931,015.20
  5. Step 5: Solve for x
    x = 540,931,015.20/22,129.82
  6. Step 6: Final answer
    x = 24,443.54

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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.