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Finding the Fourth Proportional to 19,191.52, 28,795.92 and 10,413.28

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Solution

The fourth proportional to 19,191.52, 28,795.92 and 10,413.28 is: 15,624.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.52 : 28,795.92 = 10,413.28 : x
  2. Step 2: Convert to fraction form
    19,191.52/28,795.92 = 10,413.28/x
  3. Step 3: Cross multiply
    19,191.52x = 28,795.92 × 10,413.28
  4. Step 4: Simplify right side
    19,191.52x = 299,859,977.82
  5. Step 5: Solve for x
    x = 299,859,977.82/19,191.52
  6. Step 6: Final answer
    x = 15,624.61

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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.