Home / 38,515.70-57,779.73-12,218.45

Finding the Fourth Proportional to 38,515.70, 57,779.73 and 12,218.45

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Solution

The fourth proportional to 38,515.70, 57,779.73 and 12,218.45 is: 18,329.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.70 : 57,779.73 = 12,218.45 : x
  2. Step 2: Convert to fraction form
    38,515.70/57,779.73 = 12,218.45/x
  3. Step 3: Cross multiply
    38,515.70x = 57,779.73 × 12,218.45
  4. Step 4: Simplify right side
    38,515.70x = 705,978,453.12
  5. Step 5: Solve for x
    x = 705,978,453.12/38,515.70
  6. Step 6: Final answer
    x = 18,329.63

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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.