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Finding the Fourth Proportional to 19,961.29, 29,948.01 and 8,866.99

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Solution

The fourth proportional to 19,961.29, 29,948.01 and 8,866.99 is: 13,303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.29 : 29,948.01 = 8,866.99 : x
  2. Step 2: Convert to fraction form
    19,961.29/29,948.01 = 8,866.99/x
  3. Step 3: Cross multiply
    19,961.29x = 29,948.01 × 8,866.99
  4. Step 4: Simplify right side
    19,961.29x = 265,548,705.19
  5. Step 5: Solve for x
    x = 265,548,705.19/19,961.29
  6. Step 6: Final answer
    x = 13,303.18

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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.