Home / 12,731.30-19,077.60-6,149.60

Finding the Fourth Proportional to 12,731.30, 19,077.60 and 6,149.60

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Solution

The fourth proportional to 12,731.30, 19,077.60 and 6,149.60 is: 9,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.30 : 19,077.60 = 6,149.60 : x
  2. Step 2: Convert to fraction form
    12,731.30/19,077.60 = 6,149.60/x
  3. Step 3: Cross multiply
    12,731.30x = 19,077.60 × 6,149.60
  4. Step 4: Simplify right side
    12,731.30x = 117,319,608.96
  5. Step 5: Solve for x
    x = 117,319,608.96/12,731.30
  6. Step 6: Final answer
    x = 9,215.05

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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.