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Finding the Fourth Proportional to 12,995.91, 19,504.80 and 5,605.88

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Solution

The fourth proportional to 12,995.91, 19,504.80 and 5,605.88 is: 8,413.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.91 : 19,504.80 = 5,605.88 : x
  2. Step 2: Convert to fraction form
    12,995.91/19,504.80 = 5,605.88/x
  3. Step 3: Cross multiply
    12,995.91x = 19,504.80 × 5,605.88
  4. Step 4: Simplify right side
    12,995.91x = 109,341,470.70
  5. Step 5: Solve for x
    x = 109,341,470.70/12,995.91
  6. Step 6: Final answer
    x = 8,413.53

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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.