Home / 13,386.85-18,476.44-7,725.25

Finding the Fourth Proportional to 13,386.85, 18,476.44 and 7,725.25

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Solution

The fourth proportional to 13,386.85, 18,476.44 and 7,725.25 is: 10,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.85 : 18,476.44 = 7,725.25 : x
  2. Step 2: Convert to fraction form
    13,386.85/18,476.44 = 7,725.25/x
  3. Step 3: Cross multiply
    13,386.85x = 18,476.44 × 7,725.25
  4. Step 4: Simplify right side
    13,386.85x = 142,735,121.89
  5. Step 5: Solve for x
    x = 142,735,121.89/13,386.85
  6. Step 6: Final answer
    x = 10,662.34

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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.