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Finding the Fourth Proportional to 19,386.28, 29,082.36 and 8,293

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Solution

The fourth proportional to 19,386.28, 29,082.36 and 8,293 is: 12,440.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.28 : 29,082.36 = 8,293 : x
  2. Step 2: Convert to fraction form
    19,386.28/29,082.36 = 8,293/x
  3. Step 3: Cross multiply
    19,386.28x = 29,082.36 × 8,293
  4. Step 4: Simplify right side
    19,386.28x = 241,180,011.48
  5. Step 5: Solve for x
    x = 241,180,011.48/19,386.28
  6. Step 6: Final answer
    x = 12,440.76

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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.