Home / 43,485.20-65,212.39-20,686.37

Finding the Fourth Proportional to 43,485.20, 65,212.39 and 20,686.37

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Solution

The fourth proportional to 43,485.20, 65,212.39 and 20,686.37 is: 31,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,485.20 : 65,212.39 = 20,686.37 : x
  2. Step 2: Convert to fraction form
    43,485.20/65,212.39 = 20,686.37/x
  3. Step 3: Cross multiply
    43,485.20x = 65,212.39 × 20,686.37
  4. Step 4: Simplify right side
    43,485.20x = 1,349,007,327.92
  5. Step 5: Solve for x
    x = 1,349,007,327.92/43,485.20
  6. Step 6: Final answer
    x = 31,022.22

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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.