Home / 12,807.74-19,217.55-5,413.92

Finding the Fourth Proportional to 12,807.74, 19,217.55 and 5,413.92

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Solution

The fourth proportional to 12,807.74, 19,217.55 and 5,413.92 is: 8,123.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.74 : 19,217.55 = 5,413.92 : x
  2. Step 2: Convert to fraction form
    12,807.74/19,217.55 = 5,413.92/x
  3. Step 3: Cross multiply
    12,807.74x = 19,217.55 × 5,413.92
  4. Step 4: Simplify right side
    12,807.74x = 104,042,278.30
  5. Step 5: Solve for x
    x = 104,042,278.30/12,807.74
  6. Step 6: Final answer
    x = 8,123.39

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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.