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Finding the Fourth Proportional to 19,303.47, 28,954.49 and 6,991.47

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Solution

The fourth proportional to 19,303.47, 28,954.49 and 6,991.47 is: 10,486.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,303.47 : 28,954.49 = 6,991.47 : x
  2. Step 2: Convert to fraction form
    19,303.47/28,954.49 = 6,991.47/x
  3. Step 3: Cross multiply
    19,303.47x = 28,954.49 × 6,991.47
  4. Step 4: Simplify right side
    19,303.47x = 202,434,413.24
  5. Step 5: Solve for x
    x = 202,434,413.24/19,303.47
  6. Step 6: Final answer
    x = 10,486.94

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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.