Home / 12,719.30-17,553.31-7,413.80

Finding the Fourth Proportional to 12,719.30, 17,553.31 and 7,413.80

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Solution

The fourth proportional to 12,719.30, 17,553.31 and 7,413.80 is: 10,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.30 : 17,553.31 = 7,413.80 : x
  2. Step 2: Convert to fraction form
    12,719.30/17,553.31 = 7,413.80/x
  3. Step 3: Cross multiply
    12,719.30x = 17,553.31 × 7,413.80
  4. Step 4: Simplify right side
    12,719.30x = 130,136,623.38
  5. Step 5: Solve for x
    x = 130,136,623.38/12,719.30
  6. Step 6: Final answer
    x = 10,231.43

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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.