Home / 13,919.06-19,208.54-7,545.78

Finding the Fourth Proportional to 13,919.06, 19,208.54 and 7,545.78

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Solution

The fourth proportional to 13,919.06, 19,208.54 and 7,545.78 is: 10,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.06 : 19,208.54 = 7,545.78 : x
  2. Step 2: Convert to fraction form
    13,919.06/19,208.54 = 7,545.78/x
  3. Step 3: Cross multiply
    13,919.06x = 19,208.54 × 7,545.78
  4. Step 4: Simplify right side
    13,919.06x = 144,943,416.96
  5. Step 5: Solve for x
    x = 144,943,416.96/13,919.06
  6. Step 6: Final answer
    x = 10,413.30

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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.