Home / 13,303.68-18,357.39-8,268.72

Finding the Fourth Proportional to 13,303.68, 18,357.39 and 8,268.72

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Solution

The fourth proportional to 13,303.68, 18,357.39 and 8,268.72 is: 11,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,303.68 : 18,357.39 = 8,268.72 : x
  2. Step 2: Convert to fraction form
    13,303.68/18,357.39 = 8,268.72/x
  3. Step 3: Cross multiply
    13,303.68x = 18,357.39 × 8,268.72
  4. Step 4: Simplify right side
    13,303.68x = 151,792,117.84
  5. Step 5: Solve for x
    x = 151,792,117.84/13,303.68
  6. Step 6: Final answer
    x = 11,409.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.