Home / 10,945.40-16,427.70-9,390.20

Finding the Fourth Proportional to 10,945.40, 16,427.70 and 9,390.20

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Solution

The fourth proportional to 10,945.40, 16,427.70 and 9,390.20 is: 14,093.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.40 : 16,427.70 = 9,390.20 : x
  2. Step 2: Convert to fraction form
    10,945.40/16,427.70 = 9,390.20/x
  3. Step 3: Cross multiply
    10,945.40x = 16,427.70 × 9,390.20
  4. Step 4: Simplify right side
    10,945.40x = 154,259,388.54
  5. Step 5: Solve for x
    x = 154,259,388.54/10,945.40
  6. Step 6: Final answer
    x = 14,093.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.