Home / 12,661.41-18,986.64-4,342.25

Finding the Fourth Proportional to 12,661.41, 18,986.64 and 4,342.25

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Solution

The fourth proportional to 12,661.41, 18,986.64 and 4,342.25 is: 6,511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.41 : 18,986.64 = 4,342.25 : x
  2. Step 2: Convert to fraction form
    12,661.41/18,986.64 = 4,342.25/x
  3. Step 3: Cross multiply
    12,661.41x = 18,986.64 × 4,342.25
  4. Step 4: Simplify right side
    12,661.41x = 82,444,642.61
  5. Step 5: Solve for x
    x = 82,444,642.61/12,661.41
  6. Step 6: Final answer
    x = 6,511.49

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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.