Home / 13,435.21-20,150.18-12,768.42

Finding the Fourth Proportional to 13,435.21, 20,150.18 and 12,768.42

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Solution

The fourth proportional to 13,435.21, 20,150.18 and 12,768.42 is: 19,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.21 : 20,150.18 = 12,768.42 : x
  2. Step 2: Convert to fraction form
    13,435.21/20,150.18 = 12,768.42/x
  3. Step 3: Cross multiply
    13,435.21x = 20,150.18 × 12,768.42
  4. Step 4: Simplify right side
    13,435.21x = 257,285,961.32
  5. Step 5: Solve for x
    x = 257,285,961.32/13,435.21
  6. Step 6: Final answer
    x = 19,150.13

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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.