Home / 13,280.63-18,327.13-7,906.75

Finding the Fourth Proportional to 13,280.63, 18,327.13 and 7,906.75

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Solution

The fourth proportional to 13,280.63, 18,327.13 and 7,906.75 is: 10,911.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.63 : 18,327.13 = 7,906.75 : x
  2. Step 2: Convert to fraction form
    13,280.63/18,327.13 = 7,906.75/x
  3. Step 3: Cross multiply
    13,280.63x = 18,327.13 × 7,906.75
  4. Step 4: Simplify right side
    13,280.63x = 144,907,969.54
  5. Step 5: Solve for x
    x = 144,907,969.54/13,280.63
  6. Step 6: Final answer
    x = 10,911.23

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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.