Home / 12,419.55-18,631.14-3,653.31

Finding the Fourth Proportional to 12,419.55, 18,631.14 and 3,653.31

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Solution

The fourth proportional to 12,419.55, 18,631.14 and 3,653.31 is: 5,480.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.55 : 18,631.14 = 3,653.31 : x
  2. Step 2: Convert to fraction form
    12,419.55/18,631.14 = 3,653.31/x
  3. Step 3: Cross multiply
    12,419.55x = 18,631.14 × 3,653.31
  4. Step 4: Simplify right side
    12,419.55x = 68,065,330.07
  5. Step 5: Solve for x
    x = 68,065,330.07/12,419.55
  6. Step 6: Final answer
    x = 5,480.50

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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.