Home / 39,186.21-54,076.95-22,419.21

Finding the Fourth Proportional to 39,186.21, 54,076.95 and 22,419.21

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Solution

The fourth proportional to 39,186.21, 54,076.95 and 22,419.21 is: 30,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,186.21 : 54,076.95 = 22,419.21 : x
  2. Step 2: Convert to fraction form
    39,186.21/54,076.95 = 22,419.21/x
  3. Step 3: Cross multiply
    39,186.21x = 54,076.95 × 22,419.21
  4. Step 4: Simplify right side
    39,186.21x = 1,212,362,498.21
  5. Step 5: Solve for x
    x = 1,212,362,498.21/39,186.21
  6. Step 6: Final answer
    x = 30,938.50

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Double scale
Find fourth proportional to 39,187.21, 54,078.33 and 22,420.21
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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.