Home / 13,320-18,382.60-7,352.16

Finding the Fourth Proportional to 13,320, 18,382.60 and 7,352.16

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Solution

The fourth proportional to 13,320, 18,382.60 and 7,352.16 is: 10,146.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320 : 18,382.60 = 7,352.16 : x
  2. Step 2: Convert to fraction form
    13,320/18,382.60 = 7,352.16/x
  3. Step 3: Cross multiply
    13,320x = 18,382.60 × 7,352.16
  4. Step 4: Simplify right side
    13,320x = 135,151,816.42
  5. Step 5: Solve for x
    x = 135,151,816.42/13,320
  6. Step 6: Final answer
    x = 10,146.53

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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.