Home / 13,651.97-18,839.75-7,683.72

Finding the Fourth Proportional to 13,651.97, 18,839.75 and 7,683.72

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Solution

The fourth proportional to 13,651.97, 18,839.75 and 7,683.72 is: 10,603.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.97 : 18,839.75 = 7,683.72 : x
  2. Step 2: Convert to fraction form
    13,651.97/18,839.75 = 7,683.72/x
  3. Step 3: Cross multiply
    13,651.97x = 18,839.75 × 7,683.72
  4. Step 4: Simplify right side
    13,651.97x = 144,759,325.45
  5. Step 5: Solve for x
    x = 144,759,325.45/13,651.97
  6. Step 6: Final answer
    x = 10,603.55

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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.