Home / 12,144.21-16,765.43-9,312.05

Finding the Fourth Proportional to 12,144.21, 16,765.43 and 9,312.05

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Solution

The fourth proportional to 12,144.21, 16,765.43 and 9,312.05 is: 12,855.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.21 : 16,765.43 = 9,312.05 : x
  2. Step 2: Convert to fraction form
    12,144.21/16,765.43 = 9,312.05/x
  3. Step 3: Cross multiply
    12,144.21x = 16,765.43 × 9,312.05
  4. Step 4: Simplify right side
    12,144.21x = 156,120,392.04
  5. Step 5: Solve for x
    x = 156,120,392.04/12,144.21
  6. Step 6: Final answer
    x = 12,855.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.