Home / 13,618.92-20,413.82-7,043.40

Finding the Fourth Proportional to 13,618.92, 20,413.82 and 7,043.40

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Solution

The fourth proportional to 13,618.92, 20,413.82 and 7,043.40 is: 10,557.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.92 : 20,413.82 = 7,043.40 : x
  2. Step 2: Convert to fraction form
    13,618.92/20,413.82 = 7,043.40/x
  3. Step 3: Cross multiply
    13,618.92x = 20,413.82 × 7,043.40
  4. Step 4: Simplify right side
    13,618.92x = 143,782,699.79
  5. Step 5: Solve for x
    x = 143,782,699.79/13,618.92
  6. Step 6: Final answer
    x = 10,557.57

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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.