Home / 12,391.36-18,586.97-3,031.42

Finding the Fourth Proportional to 12,391.36, 18,586.97 and 3,031.42

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Solution

The fourth proportional to 12,391.36, 18,586.97 and 3,031.42 is: 4,547.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.36 : 18,586.97 = 3,031.42 : x
  2. Step 2: Convert to fraction form
    12,391.36/18,586.97 = 3,031.42/x
  3. Step 3: Cross multiply
    12,391.36x = 18,586.97 × 3,031.42
  4. Step 4: Simplify right side
    12,391.36x = 56,344,912.60
  5. Step 5: Solve for x
    x = 56,344,912.60/12,391.36
  6. Step 6: Final answer
    x = 4,547.11

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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.