Home / 13,106.50-18,090.37-8,328.75

Finding the Fourth Proportional to 13,106.50, 18,090.37 and 8,328.75

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Solution

The fourth proportional to 13,106.50, 18,090.37 and 8,328.75 is: 11,495.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.50 : 18,090.37 = 8,328.75 : x
  2. Step 2: Convert to fraction form
    13,106.50/18,090.37 = 8,328.75/x
  3. Step 3: Cross multiply
    13,106.50x = 18,090.37 × 8,328.75
  4. Step 4: Simplify right side
    13,106.50x = 150,670,169.14
  5. Step 5: Solve for x
    x = 150,670,169.14/13,106.50
  6. Step 6: Final answer
    x = 11,495.84

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Double scale
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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.