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Finding the Fourth Proportional to 12,578.74, 17,358.98 and 7,273.89

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Solution

The fourth proportional to 12,578.74, 17,358.98 and 7,273.89 is: 10,038.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.74 : 17,358.98 = 7,273.89 : x
  2. Step 2: Convert to fraction form
    12,578.74/17,358.98 = 7,273.89/x
  3. Step 3: Cross multiply
    12,578.74x = 17,358.98 × 7,273.89
  4. Step 4: Simplify right side
    12,578.74x = 126,267,329.22
  5. Step 5: Solve for x
    x = 126,267,329.22/12,578.74
  6. Step 6: Final answer
    x = 10,038.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.