Home / 13,538.09-20,397.41-12,223.32

Finding the Fourth Proportional to 13,538.09, 20,397.41 and 12,223.32

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Solution

The fourth proportional to 13,538.09, 20,397.41 and 12,223.32 is: 18,416.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.09 : 20,397.41 = 12,223.32 : x
  2. Step 2: Convert to fraction form
    13,538.09/20,397.41 = 12,223.32/x
  3. Step 3: Cross multiply
    13,538.09x = 20,397.41 × 12,223.32
  4. Step 4: Simplify right side
    13,538.09x = 249,324,069.60
  5. Step 5: Solve for x
    x = 249,324,069.60/13,538.09
  6. Step 6: Final answer
    x = 18,416.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.