Home / 21,772.64-29,979.19-19,068.27

Finding the Fourth Proportional to 21,772.64, 29,979.19 and 19,068.27

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Solution

The fourth proportional to 21,772.64, 29,979.19 and 19,068.27 is: 26,255.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.64 : 29,979.19 = 19,068.27 : x
  2. Step 2: Convert to fraction form
    21,772.64/29,979.19 = 19,068.27/x
  3. Step 3: Cross multiply
    21,772.64x = 29,979.19 × 19,068.27
  4. Step 4: Simplify right side
    21,772.64x = 571,651,289.30
  5. Step 5: Solve for x
    x = 571,651,289.30/21,772.64
  6. Step 6: Final answer
    x = 26,255.49

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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.