Home / 38,505.10-57,759.69-12,211.90

Finding the Fourth Proportional to 38,505.10, 57,759.69 and 12,211.90

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Solution

The fourth proportional to 38,505.10, 57,759.69 and 12,211.90 is: 18,318.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,505.10 : 57,759.69 = 12,211.90 : x
  2. Step 2: Convert to fraction form
    38,505.10/57,759.69 = 12,211.90/x
  3. Step 3: Cross multiply
    38,505.10x = 57,759.69 × 12,211.90
  4. Step 4: Simplify right side
    38,505.10x = 705,355,558.31
  5. Step 5: Solve for x
    x = 705,355,558.31/38,505.10
  6. Step 6: Final answer
    x = 18,318.50

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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.