Home / 12,040.30-18,069.72-5,378.86

Finding the Fourth Proportional to 12,040.30, 18,069.72 and 5,378.86

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Solution

The fourth proportional to 12,040.30, 18,069.72 and 5,378.86 is: 8,072.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,040.30 : 18,069.72 = 5,378.86 : x
  2. Step 2: Convert to fraction form
    12,040.30/18,069.72 = 5,378.86/x
  3. Step 3: Cross multiply
    12,040.30x = 18,069.72 × 5,378.86
  4. Step 4: Simplify right side
    12,040.30x = 97,194,494.12
  5. Step 5: Solve for x
    x = 97,194,494.12/12,040.30
  6. Step 6: Final answer
    x = 8,072.43

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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.