Home / 12,518.15-18,779.50-4,199.04

Finding the Fourth Proportional to 12,518.15, 18,779.50 and 4,199.04

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Solution

The fourth proportional to 12,518.15, 18,779.50 and 4,199.04 is: 6,299.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.15 : 18,779.50 = 4,199.04 : x
  2. Step 2: Convert to fraction form
    12,518.15/18,779.50 = 4,199.04/x
  3. Step 3: Cross multiply
    12,518.15x = 18,779.50 × 4,199.04
  4. Step 4: Simplify right side
    12,518.15x = 78,855,853.31
  5. Step 5: Solve for x
    x = 78,855,853.31/12,518.15
  6. Step 6: Final answer
    x = 6,299.32

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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.