Home / 19,965.91-29,940.66-7,479.50

Finding the Fourth Proportional to 19,965.91, 29,940.66 and 7,479.50

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Solution

The fourth proportional to 19,965.91, 29,940.66 and 7,479.50 is: 11,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.91 : 29,940.66 = 7,479.50 : x
  2. Step 2: Convert to fraction form
    19,965.91/29,940.66 = 7,479.50/x
  3. Step 3: Cross multiply
    19,965.91x = 29,940.66 × 7,479.50
  4. Step 4: Simplify right side
    19,965.91x = 223,941,166.47
  5. Step 5: Solve for x
    x = 223,941,166.47/19,965.91
  6. Step 6: Final answer
    x = 11,216.18

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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.