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Finding the Fourth Proportional to 13,852, 20,778.18 and 4,618

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Solution

The fourth proportional to 13,852, 20,778.18 and 4,618 is: 6,927.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,852 : 20,778.18 = 4,618 : x
  2. Step 2: Convert to fraction form
    13,852/20,778.18 = 4,618/x
  3. Step 3: Cross multiply
    13,852x = 20,778.18 × 4,618
  4. Step 4: Simplify right side
    13,852x = 95,953,635.24
  5. Step 5: Solve for x
    x = 95,953,635.24/13,852
  6. Step 6: Final answer
    x = 6,927.06

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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.