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Finding the Fourth Proportional to 15,186, 22,779 and 4,242

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Solution

The fourth proportional to 15,186, 22,779 and 4,242 is: 6,363

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186 : 22,779 = 4,242 : x
  2. Step 2: Convert to fraction form
    15,186/22,779 = 4,242/x
  3. Step 3: Cross multiply
    15,186x = 22,779 × 4,242
  4. Step 4: Simplify right side
    15,186x = 96,628,518
  5. Step 5: Solve for x
    x = 96,628,518/15,186
  6. Step 6: Final answer
    x = 6,363

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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.