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Finding the Fourth Proportional to 30,379.61, 41,923.72 and 16,950.07

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Solution

The fourth proportional to 30,379.61, 41,923.72 and 16,950.07 is: 23,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.61 : 41,923.72 = 16,950.07 : x
  2. Step 2: Convert to fraction form
    30,379.61/41,923.72 = 16,950.07/x
  3. Step 3: Cross multiply
    30,379.61x = 41,923.72 × 16,950.07
  4. Step 4: Simplify right side
    30,379.61x = 710,609,988.66
  5. Step 5: Solve for x
    x = 710,609,988.66/30,379.61
  6. Step 6: Final answer
    x = 23,391.02

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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.