Home / 12,084.48-18,126.80-3,319.20

Finding the Fourth Proportional to 12,084.48, 18,126.80 and 3,319.20

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Solution

The fourth proportional to 12,084.48, 18,126.80 and 3,319.20 is: 4,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.48 : 18,126.80 = 3,319.20 : x
  2. Step 2: Convert to fraction form
    12,084.48/18,126.80 = 3,319.20/x
  3. Step 3: Cross multiply
    12,084.48x = 18,126.80 × 3,319.20
  4. Step 4: Simplify right side
    12,084.48x = 60,166,474.56
  5. Step 5: Solve for x
    x = 60,166,474.56/12,084.48
  6. Step 6: Final answer
    x = 4,978.82

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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.