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Finding the Fourth Proportional to 19,785.68, 29,678.52 and 8,834

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Solution

The fourth proportional to 19,785.68, 29,678.52 and 8,834 is: 13,251

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.68 : 29,678.52 = 8,834 : x
  2. Step 2: Convert to fraction form
    19,785.68/29,678.52 = 8,834/x
  3. Step 3: Cross multiply
    19,785.68x = 29,678.52 × 8,834
  4. Step 4: Simplify right side
    19,785.68x = 262,180,045.68
  5. Step 5: Solve for x
    x = 262,180,045.68/19,785.68
  6. Step 6: Final answer
    x = 13,251

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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.