Home / 12,679.20-18,927.18-11,124

Finding the Fourth Proportional to 12,679.20, 18,927.18 and 11,124

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Solution

The fourth proportional to 12,679.20, 18,927.18 and 11,124 is: 16,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.20 : 18,927.18 = 11,124 : x
  2. Step 2: Convert to fraction form
    12,679.20/18,927.18 = 11,124/x
  3. Step 3: Cross multiply
    12,679.20x = 18,927.18 × 11,124
  4. Step 4: Simplify right side
    12,679.20x = 210,545,950.32
  5. Step 5: Solve for x
    x = 210,545,950.32/12,679.20
  6. Step 6: Final answer
    x = 16,605.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.