Home / 19,722.42-29,579.21-5,679.32

Finding the Fourth Proportional to 19,722.42, 29,579.21 and 5,679.32

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Solution

The fourth proportional to 19,722.42, 29,579.21 and 5,679.32 is: 8,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.42 : 29,579.21 = 5,679.32 : x
  2. Step 2: Convert to fraction form
    19,722.42/29,579.21 = 5,679.32/x
  3. Step 3: Cross multiply
    19,722.42x = 29,579.21 × 5,679.32
  4. Step 4: Simplify right side
    19,722.42x = 167,989,643.94
  5. Step 5: Solve for x
    x = 167,989,643.94/19,722.42
  6. Step 6: Final answer
    x = 8,517.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.