Home / 12,779.30-19,170.42-6,200.72

Finding the Fourth Proportional to 12,779.30, 19,170.42 and 6,200.72

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Solution

The fourth proportional to 12,779.30, 19,170.42 and 6,200.72 is: 9,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.30 : 19,170.42 = 6,200.72 : x
  2. Step 2: Convert to fraction form
    12,779.30/19,170.42 = 6,200.72/x
  3. Step 3: Cross multiply
    12,779.30x = 19,170.42 × 6,200.72
  4. Step 4: Simplify right side
    12,779.30x = 118,870,406.70
  5. Step 5: Solve for x
    x = 118,870,406.70/12,779.30
  6. Step 6: Final answer
    x = 9,301.79

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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.