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Finding the Fourth Proportional to 19,410, 29,115 and 4,818

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Solution

The fourth proportional to 19,410, 29,115 and 4,818 is: 7,227

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,410 : 29,115 = 4,818 : x
  2. Step 2: Convert to fraction form
    19,410/29,115 = 4,818/x
  3. Step 3: Cross multiply
    19,410x = 29,115 × 4,818
  4. Step 4: Simplify right side
    19,410x = 140,276,070
  5. Step 5: Solve for x
    x = 140,276,070/19,410
  6. Step 6: Final answer
    x = 7,227

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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.