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Finding the Fourth Proportional to 19,386, 29,079 and 5,535

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Solution

The fourth proportional to 19,386, 29,079 and 5,535 is: 8,302.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386 : 29,079 = 5,535 : x
  2. Step 2: Convert to fraction form
    19,386/29,079 = 5,535/x
  3. Step 3: Cross multiply
    19,386x = 29,079 × 5,535
  4. Step 4: Simplify right side
    19,386x = 160,952,265
  5. Step 5: Solve for x
    x = 160,952,265/19,386
  6. Step 6: Final answer
    x = 8,302.50

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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.