Home / 12,742.42-19,115.88-3,975.16

Finding the Fourth Proportional to 12,742.42, 19,115.88 and 3,975.16

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Solution

The fourth proportional to 12,742.42, 19,115.88 and 3,975.16 is: 5,963.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.42 : 19,115.88 = 3,975.16 : x
  2. Step 2: Convert to fraction form
    12,742.42/19,115.88 = 3,975.16/x
  3. Step 3: Cross multiply
    12,742.42x = 19,115.88 × 3,975.16
  4. Step 4: Simplify right side
    12,742.42x = 75,988,681.54
  5. Step 5: Solve for x
    x = 75,988,681.54/12,742.42
  6. Step 6: Final answer
    x = 5,963.44

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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.