Home / 13,328.68-18,393.60-7,360.60

Finding the Fourth Proportional to 13,328.68, 18,393.60 and 7,360.60

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Solution

The fourth proportional to 13,328.68, 18,393.60 and 7,360.60 is: 10,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.68 : 18,393.60 = 7,360.60 : x
  2. Step 2: Convert to fraction form
    13,328.68/18,393.60 = 7,360.60/x
  3. Step 3: Cross multiply
    13,328.68x = 18,393.60 × 7,360.60
  4. Step 4: Simplify right side
    13,328.68x = 135,387,932.16
  5. Step 5: Solve for x
    x = 135,387,932.16/13,328.68
  6. Step 6: Final answer
    x = 10,157.64

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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.