Home / 13,779.23-20,667.32-3,784.74

Finding the Fourth Proportional to 13,779.23, 20,667.32 and 3,784.74

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Solution

The fourth proportional to 13,779.23, 20,667.32 and 3,784.74 is: 5,676.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.23 : 20,667.32 = 3,784.74 : x
  2. Step 2: Convert to fraction form
    13,779.23/20,667.32 = 3,784.74/x
  3. Step 3: Cross multiply
    13,779.23x = 20,667.32 × 3,784.74
  4. Step 4: Simplify right side
    13,779.23x = 78,220,413.77
  5. Step 5: Solve for x
    x = 78,220,413.77/13,779.23
  6. Step 6: Final answer
    x = 5,676.69

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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.