Home / 13,403.55-20,112.10-6,382.25

Finding the Fourth Proportional to 13,403.55, 20,112.10 and 6,382.25

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Solution

The fourth proportional to 13,403.55, 20,112.10 and 6,382.25 is: 9,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.55 : 20,112.10 = 6,382.25 : x
  2. Step 2: Convert to fraction form
    13,403.55/20,112.10 = 6,382.25/x
  3. Step 3: Cross multiply
    13,403.55x = 20,112.10 × 6,382.25
  4. Step 4: Simplify right side
    13,403.55x = 128,360,418.31
  5. Step 5: Solve for x
    x = 128,360,418.31/13,403.55
  6. Step 6: Final answer
    x = 9,576.60

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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.