Home / 12,740.40-19,111.14-3,975.48

Finding the Fourth Proportional to 12,740.40, 19,111.14 and 3,975.48

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Solution

The fourth proportional to 12,740.40, 19,111.14 and 3,975.48 is: 5,963.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.40 : 19,111.14 = 3,975.48 : x
  2. Step 2: Convert to fraction form
    12,740.40/19,111.14 = 3,975.48/x
  3. Step 3: Cross multiply
    12,740.40x = 19,111.14 × 3,975.48
  4. Step 4: Simplify right side
    12,740.40x = 75,975,954.85
  5. Step 5: Solve for x
    x = 75,975,954.85/12,740.40
  6. Step 6: Final answer
    x = 5,963.39

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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.