Home / 13,203.40-18,220.66-7,235.26

Finding the Fourth Proportional to 13,203.40, 18,220.66 and 7,235.26

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Solution

The fourth proportional to 13,203.40, 18,220.66 and 7,235.26 is: 9,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.40 : 18,220.66 = 7,235.26 : x
  2. Step 2: Convert to fraction form
    13,203.40/18,220.66 = 7,235.26/x
  3. Step 3: Cross multiply
    13,203.40x = 18,220.66 × 7,235.26
  4. Step 4: Simplify right side
    13,203.40x = 131,831,212.47
  5. Step 5: Solve for x
    x = 131,831,212.47/13,203.40
  6. Step 6: Final answer
    x = 9,984.64

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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.