Home / 13,506.89-18,645.19-8,203.41

Finding the Fourth Proportional to 13,506.89, 18,645.19 and 8,203.41

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Solution

The fourth proportional to 13,506.89, 18,645.19 and 8,203.41 is: 11,324.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.89 : 18,645.19 = 8,203.41 : x
  2. Step 2: Convert to fraction form
    13,506.89/18,645.19 = 8,203.41/x
  3. Step 3: Cross multiply
    13,506.89x = 18,645.19 × 8,203.41
  4. Step 4: Simplify right side
    13,506.89x = 152,954,117.59
  5. Step 5: Solve for x
    x = 152,954,117.59/13,506.89
  6. Step 6: Final answer
    x = 11,324.16

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Half 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.