Home / 13,409.06-18,504.32-7,440.71

Finding the Fourth Proportional to 13,409.06, 18,504.32 and 7,440.71

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Solution

The fourth proportional to 13,409.06, 18,504.32 and 7,440.71 is: 10,268.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.06 : 18,504.32 = 7,440.71 : x
  2. Step 2: Convert to fraction form
    13,409.06/18,504.32 = 7,440.71/x
  3. Step 3: Cross multiply
    13,409.06x = 18,504.32 × 7,440.71
  4. Step 4: Simplify right side
    13,409.06x = 137,685,149.14
  5. Step 5: Solve for x
    x = 137,685,149.14/13,409.06
  6. Step 6: Final answer
    x = 10,268.07

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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.