Home / 13,203.47-18,220.79-7,235.37

Finding the Fourth Proportional to 13,203.47, 18,220.79 and 7,235.37

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Solution

The fourth proportional to 13,203.47, 18,220.79 and 7,235.37 is: 9,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.47 : 18,220.79 = 7,235.37 : x
  2. Step 2: Convert to fraction form
    13,203.47/18,220.79 = 7,235.37/x
  3. Step 3: Cross multiply
    13,203.47x = 18,220.79 × 7,235.37
  4. Step 4: Simplify right side
    13,203.47x = 131,834,121.17
  5. Step 5: Solve for x
    x = 131,834,121.17/13,203.47
  6. Step 6: Final answer
    x = 9,984.81

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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.