Home / 12,391.08-18,587.58-3,157

Finding the Fourth Proportional to 12,391.08, 18,587.58 and 3,157

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Solution

The fourth proportional to 12,391.08, 18,587.58 and 3,157 is: 4,735.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.08 : 18,587.58 = 3,157 : x
  2. Step 2: Convert to fraction form
    12,391.08/18,587.58 = 3,157/x
  3. Step 3: Cross multiply
    12,391.08x = 18,587.58 × 3,157
  4. Step 4: Simplify right side
    12,391.08x = 58,680,990.06
  5. Step 5: Solve for x
    x = 58,680,990.06/12,391.08
  6. Step 6: Final answer
    x = 4,735.74

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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.