Home / 12,765.20-19,147.79-4,000.11

Finding the Fourth Proportional to 12,765.20, 19,147.79 and 4,000.11

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Solution

The fourth proportional to 12,765.20, 19,147.79 and 4,000.11 is: 6,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.20 : 19,147.79 = 4,000.11 : x
  2. Step 2: Convert to fraction form
    12,765.20/19,147.79 = 4,000.11/x
  3. Step 3: Cross multiply
    12,765.20x = 19,147.79 × 4,000.11
  4. Step 4: Simplify right side
    12,765.20x = 76,593,266.26
  5. Step 5: Solve for x
    x = 76,593,266.26/12,765.20
  6. Step 6: Final answer
    x = 6,000.16

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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.