Home / 12,135.21-18,196.97-4,237.53

Finding the Fourth Proportional to 12,135.21, 18,196.97 and 4,237.53

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Solution

The fourth proportional to 12,135.21, 18,196.97 and 4,237.53 is: 6,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.21 : 18,196.97 = 4,237.53 : x
  2. Step 2: Convert to fraction form
    12,135.21/18,196.97 = 4,237.53/x
  3. Step 3: Cross multiply
    12,135.21x = 18,196.97 × 4,237.53
  4. Step 4: Simplify right side
    12,135.21x = 77,110,185.10
  5. Step 5: Solve for x
    x = 77,110,185.10/12,135.21
  6. Step 6: Final answer
    x = 6,354.25

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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.