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Finding the Fourth Proportional to 13,203.54, 18,220.59 and 7,235.08

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Solution

The fourth proportional to 13,203.54, 18,220.59 and 7,235.08 is: 9,984.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.54 : 18,220.59 = 7,235.08 : x
  2. Step 2: Convert to fraction form
    13,203.54/18,220.59 = 7,235.08/x
  3. Step 3: Cross multiply
    13,203.54x = 18,220.59 × 7,235.08
  4. Step 4: Simplify right side
    13,203.54x = 131,827,380.75
  5. Step 5: Solve for x
    x = 131,827,380.75/13,203.54
  6. Step 6: Final answer
    x = 9,984.25

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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.