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Finding the Fourth Proportional to 19,940.88, 29,892.28 and 7,457.52

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Solution

The fourth proportional to 19,940.88, 29,892.28 and 7,457.52 is: 11,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.88 : 29,892.28 = 7,457.52 : x
  2. Step 2: Convert to fraction form
    19,940.88/29,892.28 = 7,457.52/x
  3. Step 3: Cross multiply
    19,940.88x = 29,892.28 × 7,457.52
  4. Step 4: Simplify right side
    19,940.88x = 222,922,275.95
  5. Step 5: Solve for x
    x = 222,922,275.95/19,940.88
  6. Step 6: Final answer
    x = 11,179.16

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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.