Home / 38,515.80-57,779.10-12,217.80

Finding the Fourth Proportional to 38,515.80, 57,779.10 and 12,217.80

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Solution

The fourth proportional to 38,515.80, 57,779.10 and 12,217.80 is: 18,328.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.80 : 57,779.10 = 12,217.80 : x
  2. Step 2: Convert to fraction form
    38,515.80/57,779.10 = 12,217.80/x
  3. Step 3: Cross multiply
    38,515.80x = 57,779.10 × 12,217.80
  4. Step 4: Simplify right side
    38,515.80x = 705,933,487.98
  5. Step 5: Solve for x
    x = 705,933,487.98/38,515.80
  6. Step 6: Final answer
    x = 18,328.41

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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.