Home / 14,091.44-21,170.08-12,123.20

Finding the Fourth Proportional to 14,091.44, 21,170.08 and 12,123.20

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Solution

The fourth proportional to 14,091.44, 21,170.08 and 12,123.20 is: 18,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,091.44 : 21,170.08 = 12,123.20 : x
  2. Step 2: Convert to fraction form
    14,091.44/21,170.08 = 12,123.20/x
  3. Step 3: Cross multiply
    14,091.44x = 21,170.08 × 12,123.20
  4. Step 4: Simplify right side
    14,091.44x = 256,649,113.86
  5. Step 5: Solve for x
    x = 256,649,113.86/14,091.44
  6. Step 6: Final answer
    x = 18,213.12

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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.