Home / 13,603.69-18,768.40-7,634.53

Finding the Fourth Proportional to 13,603.69, 18,768.40 and 7,634.53

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Solution

The fourth proportional to 13,603.69, 18,768.40 and 7,634.53 is: 10,533.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.69 : 18,768.40 = 7,634.53 : x
  2. Step 2: Convert to fraction form
    13,603.69/18,768.40 = 7,634.53/x
  3. Step 3: Cross multiply
    13,603.69x = 18,768.40 × 7,634.53
  4. Step 4: Simplify right side
    13,603.69x = 143,287,912.85
  5. Step 5: Solve for x
    x = 143,287,912.85/13,603.69
  6. Step 6: Final answer
    x = 10,533.02

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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.