Home / 13,013.63-19,520.99-3,779.63

Finding the Fourth Proportional to 13,013.63, 19,520.99 and 3,779.63

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Solution

The fourth proportional to 13,013.63, 19,520.99 and 3,779.63 is: 5,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.63 : 19,520.99 = 3,779.63 : x
  2. Step 2: Convert to fraction form
    13,013.63/19,520.99 = 3,779.63/x
  3. Step 3: Cross multiply
    13,013.63x = 19,520.99 × 3,779.63
  4. Step 4: Simplify right side
    13,013.63x = 73,782,002.93
  5. Step 5: Solve for x
    x = 73,782,002.93/13,013.63
  6. Step 6: Final answer
    x = 5,669.60

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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.