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Finding the Fourth Proportional to 30,319.40, 41,842.04 and 16,890.66

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Solution

The fourth proportional to 30,319.40, 41,842.04 and 16,890.66 is: 23,309.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,319.40 : 41,842.04 = 16,890.66 : x
  2. Step 2: Convert to fraction form
    30,319.40/41,842.04 = 16,890.66/x
  3. Step 3: Cross multiply
    30,319.40x = 41,842.04 × 16,890.66
  4. Step 4: Simplify right side
    30,319.40x = 706,739,671.35
  5. Step 5: Solve for x
    x = 706,739,671.35/30,319.40
  6. Step 6: Final answer
    x = 23,309.82

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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.