Home / 19,899.42-29,849.13-8,199.78

Finding the Fourth Proportional to 19,899.42, 29,849.13 and 8,199.78

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Solution

The fourth proportional to 19,899.42, 29,849.13 and 8,199.78 is: 12,299.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.42 : 29,849.13 = 8,199.78 : x
  2. Step 2: Convert to fraction form
    19,899.42/29,849.13 = 8,199.78/x
  3. Step 3: Cross multiply
    19,899.42x = 29,849.13 × 8,199.78
  4. Step 4: Simplify right side
    19,899.42x = 244,756,299.19
  5. Step 5: Solve for x
    x = 244,756,299.19/19,899.42
  6. Step 6: Final answer
    x = 12,299.67

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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.