Home / 13,782.96-20,668.87-5,345.02

Finding the Fourth Proportional to 13,782.96, 20,668.87 and 5,345.02

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Solution

The fourth proportional to 13,782.96, 20,668.87 and 5,345.02 is: 8,015.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.96 : 20,668.87 = 5,345.02 : x
  2. Step 2: Convert to fraction form
    13,782.96/20,668.87 = 5,345.02/x
  3. Step 3: Cross multiply
    13,782.96x = 20,668.87 × 5,345.02
  4. Step 4: Simplify right side
    13,782.96x = 110,475,578.98
  5. Step 5: Solve for x
    x = 110,475,578.98/13,782.96
  6. Step 6: Final answer
    x = 8,015.37

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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.