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Finding the Fourth Proportional to 13,342.87, 18,413.36 and 7,753.87

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Solution

The fourth proportional to 13,342.87, 18,413.36 and 7,753.87 is: 10,700.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.87 : 18,413.36 = 7,753.87 : x
  2. Step 2: Convert to fraction form
    13,342.87/18,413.36 = 7,753.87/x
  3. Step 3: Cross multiply
    13,342.87x = 18,413.36 × 7,753.87
  4. Step 4: Simplify right side
    13,342.87x = 142,774,799.70
  5. Step 5: Solve for x
    x = 142,774,799.70/13,342.87
  6. Step 6: Final answer
    x = 10,700.46

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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.