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Finding the Fourth Proportional to 19,611, 27,063.18 and 10,779

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Solution

The fourth proportional to 19,611, 27,063.18 and 10,779 is: 14,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611 : 27,063.18 = 10,779 : x
  2. Step 2: Convert to fraction form
    19,611/27,063.18 = 10,779/x
  3. Step 3: Cross multiply
    19,611x = 27,063.18 × 10,779
  4. Step 4: Simplify right side
    19,611x = 291,714,017.22
  5. Step 5: Solve for x
    x = 291,714,017.22/19,611
  6. Step 6: Final answer
    x = 14,875.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.