Home / 19,410.12-29,122.74-7,724.52

Finding the Fourth Proportional to 19,410.12, 29,122.74 and 7,724.52

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Solution

The fourth proportional to 19,410.12, 29,122.74 and 7,724.52 is: 11,589.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,410.12 : 29,122.74 = 7,724.52 : x
  2. Step 2: Convert to fraction form
    19,410.12/29,122.74 = 7,724.52/x
  3. Step 3: Cross multiply
    19,410.12x = 29,122.74 × 7,724.52
  4. Step 4: Simplify right side
    19,410.12x = 224,959,187.58
  5. Step 5: Solve for x
    x = 224,959,187.58/19,410.12
  6. Step 6: Final answer
    x = 11,589.79

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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.