Home / 38,513.10-57,771.70-12,219.90

Finding the Fourth Proportional to 38,513.10, 57,771.70 and 12,219.90

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Solution

The fourth proportional to 38,513.10, 57,771.70 and 12,219.90 is: 18,330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,513.10 : 57,771.70 = 12,219.90 : x
  2. Step 2: Convert to fraction form
    38,513.10/57,771.70 = 12,219.90/x
  3. Step 3: Cross multiply
    38,513.10x = 57,771.70 × 12,219.90
  4. Step 4: Simplify right side
    38,513.10x = 705,964,396.83
  5. Step 5: Solve for x
    x = 705,964,396.83/38,513.10
  6. Step 6: Final answer
    x = 18,330.50

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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.