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Finding the Fourth Proportional to 15,779.72, 23,667.18 and 9,918.44

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Solution

The fourth proportional to 15,779.72, 23,667.18 and 9,918.44 is: 14,876.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.72 : 23,667.18 = 9,918.44 : x
  2. Step 2: Convert to fraction form
    15,779.72/23,667.18 = 9,918.44/x
  3. Step 3: Cross multiply
    15,779.72x = 23,667.18 × 9,918.44
  4. Step 4: Simplify right side
    15,779.72x = 234,741,504.80
  5. Step 5: Solve for x
    x = 234,741,504.80/15,779.72
  6. Step 6: Final answer
    x = 14,876.15

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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.