Home / 12,891.72-19,337.58-4,127.32

Finding the Fourth Proportional to 12,891.72, 19,337.58 and 4,127.32

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Solution

The fourth proportional to 12,891.72, 19,337.58 and 4,127.32 is: 6,190.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.72 : 19,337.58 = 4,127.32 : x
  2. Step 2: Convert to fraction form
    12,891.72/19,337.58 = 4,127.32/x
  3. Step 3: Cross multiply
    12,891.72x = 19,337.58 × 4,127.32
  4. Step 4: Simplify right side
    12,891.72x = 79,812,380.69
  5. Step 5: Solve for x
    x = 79,812,380.69/12,891.72
  6. Step 6: Final answer
    x = 6,190.98

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Similar ratio
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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.