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Finding the Fourth Proportional to 12,059.47, 18,089.21 and 7,316.82

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Solution

The fourth proportional to 12,059.47, 18,089.21 and 7,316.82 is: 10,975.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,059.47 : 18,089.21 = 7,316.82 : x
  2. Step 2: Convert to fraction form
    12,059.47/18,089.21 = 7,316.82/x
  3. Step 3: Cross multiply
    12,059.47x = 18,089.21 × 7,316.82
  4. Step 4: Simplify right side
    12,059.47x = 132,355,493.51
  5. Step 5: Solve for x
    x = 132,355,493.51/12,059.47
  6. Step 6: Final answer
    x = 10,975.23

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.