Home / 12,662.19-18,989.40-4,869.09

Finding the Fourth Proportional to 12,662.19, 18,989.40 and 4,869.09

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Solution

The fourth proportional to 12,662.19, 18,989.40 and 4,869.09 is: 7,302.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.19 : 18,989.40 = 4,869.09 : x
  2. Step 2: Convert to fraction form
    12,662.19/18,989.40 = 4,869.09/x
  3. Step 3: Cross multiply
    12,662.19x = 18,989.40 × 4,869.09
  4. Step 4: Simplify right side
    12,662.19x = 92,461,097.65
  5. Step 5: Solve for x
    x = 92,461,097.65/12,662.19
  6. Step 6: Final answer
    x = 7,302.14

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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.