Home / 13,485.74-20,231.51-5,165.75

Finding the Fourth Proportional to 13,485.74, 20,231.51 and 5,165.75

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Solution

The fourth proportional to 13,485.74, 20,231.51 and 5,165.75 is: 7,749.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.74 : 20,231.51 = 5,165.75 : x
  2. Step 2: Convert to fraction form
    13,485.74/20,231.51 = 5,165.75/x
  3. Step 3: Cross multiply
    13,485.74x = 20,231.51 × 5,165.75
  4. Step 4: Simplify right side
    13,485.74x = 104,510,795.80
  5. Step 5: Solve for x
    x = 104,510,795.80/13,485.74
  6. Step 6: Final answer
    x = 7,749.73

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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.