Home / 13,588.22-18,751.38-7,620.26

Finding the Fourth Proportional to 13,588.22, 18,751.38 and 7,620.26

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Solution

The fourth proportional to 13,588.22, 18,751.38 and 7,620.26 is: 10,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.22 : 18,751.38 = 7,620.26 : x
  2. Step 2: Convert to fraction form
    13,588.22/18,751.38 = 7,620.26/x
  3. Step 3: Cross multiply
    13,588.22x = 18,751.38 × 7,620.26
  4. Step 4: Simplify right side
    13,588.22x = 142,890,390.96
  5. Step 5: Solve for x
    x = 142,890,390.96/13,588.22
  6. Step 6: Final answer
    x = 10,515.75

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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.