Home / 12,461.12-18,688.50-3,693.98

Finding the Fourth Proportional to 12,461.12, 18,688.50 and 3,693.98

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Solution

The fourth proportional to 12,461.12, 18,688.50 and 3,693.98 is: 5,540.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.12 : 18,688.50 = 3,693.98 : x
  2. Step 2: Convert to fraction form
    12,461.12/18,688.50 = 3,693.98/x
  3. Step 3: Cross multiply
    12,461.12x = 18,688.50 × 3,693.98
  4. Step 4: Simplify right side
    12,461.12x = 69,034,991.95
  5. Step 5: Solve for x
    x = 69,034,991.95/12,461.12
  6. Step 6: Final answer
    x = 5,540.03

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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.