Home / 12,189.76-18,261.60-10,807.36

Finding the Fourth Proportional to 12,189.76, 18,261.60 and 10,807.36

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Solution

The fourth proportional to 12,189.76, 18,261.60 and 10,807.36 is: 16,190.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.76 : 18,261.60 = 10,807.36 : x
  2. Step 2: Convert to fraction form
    12,189.76/18,261.60 = 10,807.36/x
  3. Step 3: Cross multiply
    12,189.76x = 18,261.60 × 10,807.36
  4. Step 4: Simplify right side
    12,189.76x = 197,359,685.38
  5. Step 5: Solve for x
    x = 197,359,685.38/12,189.76
  6. Step 6: Final answer
    x = 16,190.61

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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.