Home / 12,391.08-18,586.71-3,157.08

Finding the Fourth Proportional to 12,391.08, 18,586.71 and 3,157.08

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Solution

The fourth proportional to 12,391.08, 18,586.71 and 3,157.08 is: 4,735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.08 : 18,586.71 = 3,157.08 : x
  2. Step 2: Convert to fraction form
    12,391.08/18,586.71 = 3,157.08/x
  3. Step 3: Cross multiply
    12,391.08x = 18,586.71 × 3,157.08
  4. Step 4: Simplify right side
    12,391.08x = 58,679,730.41
  5. Step 5: Solve for x
    x = 58,679,730.41/12,391.08
  6. Step 6: Final answer
    x = 4,735.64

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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.