Home / 12,186.64-18,278.70-4,790.08

Finding the Fourth Proportional to 12,186.64, 18,278.70 and 4,790.08

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Solution

The fourth proportional to 12,186.64, 18,278.70 and 4,790.08 is: 7,184.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.64 : 18,278.70 = 4,790.08 : x
  2. Step 2: Convert to fraction form
    12,186.64/18,278.70 = 4,790.08/x
  3. Step 3: Cross multiply
    12,186.64x = 18,278.70 × 4,790.08
  4. Step 4: Simplify right side
    12,186.64x = 87,556,435.30
  5. Step 5: Solve for x
    x = 87,556,435.30/12,186.64
  6. Step 6: Final answer
    x = 7,184.62

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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.