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Finding the Fourth Proportional to 13,261.56, 18,300.86 and 7,293.08

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Solution

The fourth proportional to 13,261.56, 18,300.86 and 7,293.08 is: 10,064.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.56 : 18,300.86 = 7,293.08 : x
  2. Step 2: Convert to fraction form
    13,261.56/18,300.86 = 7,293.08/x
  3. Step 3: Cross multiply
    13,261.56x = 18,300.86 × 7,293.08
  4. Step 4: Simplify right side
    13,261.56x = 133,469,636.05
  5. Step 5: Solve for x
    x = 133,469,636.05/13,261.56
  6. Step 6: Final answer
    x = 10,064.40

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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.