Home / 19,885.20-29,827.32-8,199.12

Finding the Fourth Proportional to 19,885.20, 29,827.32 and 8,199.12

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Solution

The fourth proportional to 19,885.20, 29,827.32 and 8,199.12 is: 12,298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.20 : 29,827.32 = 8,199.12 : x
  2. Step 2: Convert to fraction form
    19,885.20/29,827.32 = 8,199.12/x
  3. Step 3: Cross multiply
    19,885.20x = 29,827.32 × 8,199.12
  4. Step 4: Simplify right side
    19,885.20x = 244,557,775.96
  5. Step 5: Solve for x
    x = 244,557,775.96/19,885.20
  6. Step 6: Final answer
    x = 12,298.48

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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.