Home / 12,740.74-19,110.76-3,380.79

Finding the Fourth Proportional to 12,740.74, 19,110.76 and 3,380.79

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Solution

The fourth proportional to 12,740.74, 19,110.76 and 3,380.79 is: 5,071.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.74 : 19,110.76 = 3,380.79 : x
  2. Step 2: Convert to fraction form
    12,740.74/19,110.76 = 3,380.79/x
  3. Step 3: Cross multiply
    12,740.74x = 19,110.76 × 3,380.79
  4. Step 4: Simplify right side
    12,740.74x = 64,609,466.30
  5. Step 5: Solve for x
    x = 64,609,466.30/12,740.74
  6. Step 6: Final answer
    x = 5,071.09

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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.