Home / 11,040.49-16,560.74-6,420.25

Finding the Fourth Proportional to 11,040.49, 16,560.74 and 6,420.25

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Solution

The fourth proportional to 11,040.49, 16,560.74 and 6,420.25 is: 9,630.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,040.49 : 16,560.74 = 6,420.25 : x
  2. Step 2: Convert to fraction form
    11,040.49/16,560.74 = 6,420.25/x
  3. Step 3: Cross multiply
    11,040.49x = 16,560.74 × 6,420.25
  4. Step 4: Simplify right side
    11,040.49x = 106,324,090.99
  5. Step 5: Solve for x
    x = 106,324,090.99/11,040.49
  6. Step 6: Final answer
    x = 9,630.38

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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.