Home / 13,201.84-18,219.90-8,485.21

Finding the Fourth Proportional to 13,201.84, 18,219.90 and 8,485.21

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Solution

The fourth proportional to 13,201.84, 18,219.90 and 8,485.21 is: 11,710.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.84 : 18,219.90 = 8,485.21 : x
  2. Step 2: Convert to fraction form
    13,201.84/18,219.90 = 8,485.21/x
  3. Step 3: Cross multiply
    13,201.84x = 18,219.90 × 8,485.21
  4. Step 4: Simplify right side
    13,201.84x = 154,599,677.68
  5. Step 5: Solve for x
    x = 154,599,677.68/13,201.84
  6. Step 6: Final answer
    x = 11,710.46

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Half scale
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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.