Home / 12,369.72-18,554.78-3,605.11

Finding the Fourth Proportional to 12,369.72, 18,554.78 and 3,605.11

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Solution

The fourth proportional to 12,369.72, 18,554.78 and 3,605.11 is: 5,407.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.72 : 18,554.78 = 3,605.11 : x
  2. Step 2: Convert to fraction form
    12,369.72/18,554.78 = 3,605.11/x
  3. Step 3: Cross multiply
    12,369.72x = 18,554.78 × 3,605.11
  4. Step 4: Simplify right side
    12,369.72x = 66,892,022.93
  5. Step 5: Solve for x
    x = 66,892,022.93/12,369.72
  6. Step 6: Final answer
    x = 5,407.72

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1.5x scale

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.