Home / 12,261.54-18,403.86-6,422.25

Finding the Fourth Proportional to 12,261.54, 18,403.86 and 6,422.25

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Solution

The fourth proportional to 12,261.54, 18,403.86 and 6,422.25 is: 9,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.54 : 18,403.86 = 6,422.25 : x
  2. Step 2: Convert to fraction form
    12,261.54/18,403.86 = 6,422.25/x
  3. Step 3: Cross multiply
    12,261.54x = 18,403.86 × 6,422.25
  4. Step 4: Simplify right side
    12,261.54x = 118,194,189.89
  5. Step 5: Solve for x
    x = 118,194,189.89/12,261.54
  6. Step 6: Final answer
    x = 9,639.42

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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.