Home / 18,666.08-27,989.40-5,516.68

Finding the Fourth Proportional to 18,666.08, 27,989.40 and 5,516.68

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Solution

The fourth proportional to 18,666.08, 27,989.40 and 5,516.68 is: 8,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.08 : 27,989.40 = 5,516.68 : x
  2. Step 2: Convert to fraction form
    18,666.08/27,989.40 = 5,516.68/x
  3. Step 3: Cross multiply
    18,666.08x = 27,989.40 × 5,516.68
  4. Step 4: Simplify right side
    18,666.08x = 154,408,563.19
  5. Step 5: Solve for x
    x = 154,408,563.19/18,666.08
  6. Step 6: Final answer
    x = 8,272.15

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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.