Home / 12,968.72-19,423.80-7,763.60

Finding the Fourth Proportional to 12,968.72, 19,423.80 and 7,763.60

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Solution

The fourth proportional to 12,968.72, 19,423.80 and 7,763.60 is: 11,627.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.72 : 19,423.80 = 7,763.60 : x
  2. Step 2: Convert to fraction form
    12,968.72/19,423.80 = 7,763.60/x
  3. Step 3: Cross multiply
    12,968.72x = 19,423.80 × 7,763.60
  4. Step 4: Simplify right side
    12,968.72x = 150,798,613.68
  5. Step 5: Solve for x
    x = 150,798,613.68/12,968.72
  6. Step 6: Final answer
    x = 11,627.87

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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.