Home / 13,109.54-18,103.19-8,331.06

Finding the Fourth Proportional to 13,109.54, 18,103.19 and 8,331.06

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Solution

The fourth proportional to 13,109.54, 18,103.19 and 8,331.06 is: 11,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.54 : 18,103.19 = 8,331.06 : x
  2. Step 2: Convert to fraction form
    13,109.54/18,103.19 = 8,331.06/x
  3. Step 3: Cross multiply
    13,109.54x = 18,103.19 × 8,331.06
  4. Step 4: Simplify right side
    13,109.54x = 150,818,762.08
  5. Step 5: Solve for x
    x = 150,818,762.08/13,109.54
  6. Step 6: Final answer
    x = 11,504.50

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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.