Home / 10,243.12-14,074.20-8,143.60

Finding the Fourth Proportional to 10,243.12, 14,074.20 and 8,143.60

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Solution

The fourth proportional to 10,243.12, 14,074.20 and 8,143.60 is: 11,189.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,243.12 : 14,074.20 = 8,143.60 : x
  2. Step 2: Convert to fraction form
    10,243.12/14,074.20 = 8,143.60/x
  3. Step 3: Cross multiply
    10,243.12x = 14,074.20 × 8,143.60
  4. Step 4: Simplify right side
    10,243.12x = 114,614,655.12
  5. Step 5: Solve for x
    x = 114,614,655.12/10,243.12
  6. Step 6: Final answer
    x = 11,189.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.