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Finding the Fourth Proportional to 19,776.54, 29,665.02 and 6,628.92

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Solution

The fourth proportional to 19,776.54, 29,665.02 and 6,628.92 is: 9,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.54 : 29,665.02 = 6,628.92 : x
  2. Step 2: Convert to fraction form
    19,776.54/29,665.02 = 6,628.92/x
  3. Step 3: Cross multiply
    19,776.54x = 29,665.02 × 6,628.92
  4. Step 4: Simplify right side
    19,776.54x = 196,647,044.38
  5. Step 5: Solve for x
    x = 196,647,044.38/19,776.54
  6. Step 6: Final answer
    x = 9,943.45

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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.