Home / 12,240.12-18,331.02-10,286.40

Finding the Fourth Proportional to 12,240.12, 18,331.02 and 10,286.40

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Solution

The fourth proportional to 12,240.12, 18,331.02 and 10,286.40 is: 15,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.12 : 18,331.02 = 10,286.40 : x
  2. Step 2: Convert to fraction form
    12,240.12/18,331.02 = 10,286.40/x
  3. Step 3: Cross multiply
    12,240.12x = 18,331.02 × 10,286.40
  4. Step 4: Simplify right side
    12,240.12x = 188,560,204.13
  5. Step 5: Solve for x
    x = 188,560,204.13/12,240.12
  6. Step 6: Final answer
    x = 15,405.09

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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.