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Finding the Fourth Proportional to 19,671.81, 29,508.75 and 8,579.27

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Solution

The fourth proportional to 19,671.81, 29,508.75 and 8,579.27 is: 12,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.81 : 29,508.75 = 8,579.27 : x
  2. Step 2: Convert to fraction form
    19,671.81/29,508.75 = 8,579.27/x
  3. Step 3: Cross multiply
    19,671.81x = 29,508.75 × 8,579.27
  4. Step 4: Simplify right side
    19,671.81x = 253,163,386.07
  5. Step 5: Solve for x
    x = 253,163,386.07/19,671.81
  6. Step 6: Final answer
    x = 12,869.35

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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.