Home / 12,235.20-18,331.20-10,040.64

Finding the Fourth Proportional to 12,235.20, 18,331.20 and 10,040.64

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Solution

The fourth proportional to 12,235.20, 18,331.20 and 10,040.64 is: 15,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.20 : 18,331.20 = 10,040.64 : x
  2. Step 2: Convert to fraction form
    12,235.20/18,331.20 = 10,040.64/x
  3. Step 3: Cross multiply
    12,235.20x = 18,331.20 × 10,040.64
  4. Step 4: Simplify right side
    12,235.20x = 184,056,979.97
  5. Step 5: Solve for x
    x = 184,056,979.97/12,235.20
  6. Step 6: Final answer
    x = 15,043.23

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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.