Home / 13,749.22-20,621.40-3,888.28

Finding the Fourth Proportional to 13,749.22, 20,621.40 and 3,888.28

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Solution

The fourth proportional to 13,749.22, 20,621.40 and 3,888.28 is: 5,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.22 : 20,621.40 = 3,888.28 : x
  2. Step 2: Convert to fraction form
    13,749.22/20,621.40 = 3,888.28/x
  3. Step 3: Cross multiply
    13,749.22x = 20,621.40 × 3,888.28
  4. Step 4: Simplify right side
    13,749.22x = 80,181,777.19
  5. Step 5: Solve for x
    x = 80,181,777.19/13,749.22
  6. Step 6: Final answer
    x = 5,831.73

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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.