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Finding the Fourth Proportional to 12,618.51, 17,413.29 and 7,029.51

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Solution

The fourth proportional to 12,618.51, 17,413.29 and 7,029.51 is: 9,700.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.51 : 17,413.29 = 7,029.51 : x
  2. Step 2: Convert to fraction form
    12,618.51/17,413.29 = 7,029.51/x
  3. Step 3: Cross multiply
    12,618.51x = 17,413.29 × 7,029.51
  4. Step 4: Simplify right side
    12,618.51x = 122,406,896.19
  5. Step 5: Solve for x
    x = 122,406,896.19/12,618.51
  6. Step 6: Final answer
    x = 9,700.58

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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.