Home / 19,976.64-29,947.68-7,656

Finding the Fourth Proportional to 19,976.64, 29,947.68 and 7,656

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Solution

The fourth proportional to 19,976.64, 29,947.68 and 7,656 is: 11,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.64 : 29,947.68 = 7,656 : x
  2. Step 2: Convert to fraction form
    19,976.64/29,947.68 = 7,656/x
  3. Step 3: Cross multiply
    19,976.64x = 29,947.68 × 7,656
  4. Step 4: Simplify right side
    19,976.64x = 229,279,438.08
  5. Step 5: Solve for x
    x = 229,279,438.08/19,976.64
  6. Step 6: Final answer
    x = 11,477.38

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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.