Home / 12,187.44-18,187.86-10,875.12

Finding the Fourth Proportional to 12,187.44, 18,187.86 and 10,875.12

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Solution

The fourth proportional to 12,187.44, 18,187.86 and 10,875.12 is: 16,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.44 : 18,187.86 = 10,875.12 : x
  2. Step 2: Convert to fraction form
    12,187.44/18,187.86 = 10,875.12/x
  3. Step 3: Cross multiply
    12,187.44x = 18,187.86 × 10,875.12
  4. Step 4: Simplify right side
    12,187.44x = 197,795,160.04
  5. Step 5: Solve for x
    x = 197,795,160.04/12,187.44
  6. Step 6: Final answer
    x = 16,229.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.