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Finding the Fourth Proportional to 19,663.76, 29,495.57 and 7,976.94

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Solution

The fourth proportional to 19,663.76, 29,495.57 and 7,976.94 is: 11,965.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.76 : 29,495.57 = 7,976.94 : x
  2. Step 2: Convert to fraction form
    19,663.76/29,495.57 = 7,976.94/x
  3. Step 3: Cross multiply
    19,663.76x = 29,495.57 × 7,976.94
  4. Step 4: Simplify right side
    19,663.76x = 235,284,352.27
  5. Step 5: Solve for x
    x = 235,284,352.27/19,663.76
  6. Step 6: Final answer
    x = 11,965.38

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1.5x scale

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.