Home / 12,740.90-19,112.29-3,975.75

Finding the Fourth Proportional to 12,740.90, 19,112.29 and 3,975.75

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Solution

The fourth proportional to 12,740.90, 19,112.29 and 3,975.75 is: 5,963.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.90 : 19,112.29 = 3,975.75 : x
  2. Step 2: Convert to fraction form
    12,740.90/19,112.29 = 3,975.75/x
  3. Step 3: Cross multiply
    12,740.90x = 19,112.29 × 3,975.75
  4. Step 4: Simplify right side
    12,740.90x = 75,985,677.03
  5. Step 5: Solve for x
    x = 75,985,677.03/12,740.90
  6. Step 6: Final answer
    x = 5,963.92

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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.