Home / 13,304.26-18,359.88-7,639.38

Finding the Fourth Proportional to 13,304.26, 18,359.88 and 7,639.38

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Solution

The fourth proportional to 13,304.26, 18,359.88 and 7,639.38 is: 10,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,304.26 : 18,359.88 = 7,639.38 : x
  2. Step 2: Convert to fraction form
    13,304.26/18,359.88 = 7,639.38/x
  3. Step 3: Cross multiply
    13,304.26x = 18,359.88 × 7,639.38
  4. Step 4: Simplify right side
    13,304.26x = 140,258,100.07
  5. Step 5: Solve for x
    x = 140,258,100.07/13,304.26
  6. Step 6: Final answer
    x = 10,542.35

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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.