Home / 13,540.16-18,684.14-7,571.68

Finding the Fourth Proportional to 13,540.16, 18,684.14 and 7,571.68

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Solution

The fourth proportional to 13,540.16, 18,684.14 and 7,571.68 is: 10,448.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.16 : 18,684.14 = 7,571.68 : x
  2. Step 2: Convert to fraction form
    13,540.16/18,684.14 = 7,571.68/x
  3. Step 3: Cross multiply
    13,540.16x = 18,684.14 × 7,571.68
  4. Step 4: Simplify right side
    13,540.16x = 141,470,244.59
  5. Step 5: Solve for x
    x = 141,470,244.59/13,540.16
  6. Step 6: Final answer
    x = 10,448.19

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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.