Home / 13,280.37-18,338.69-8,253.13

Finding the Fourth Proportional to 13,280.37, 18,338.69 and 8,253.13

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Solution

The fourth proportional to 13,280.37, 18,338.69 and 8,253.13 is: 11,396.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.37 : 18,338.69 = 8,253.13 : x
  2. Step 2: Convert to fraction form
    13,280.37/18,338.69 = 8,253.13/x
  3. Step 3: Cross multiply
    13,280.37x = 18,338.69 × 8,253.13
  4. Step 4: Simplify right side
    13,280.37x = 151,351,592.60
  5. Step 5: Solve for x
    x = 151,351,592.60/13,280.37
  6. Step 6: Final answer
    x = 11,396.64

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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.