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Finding the Fourth Proportional to 29,978.81, 41,370.77 and 16,550.07

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Solution

The fourth proportional to 29,978.81, 41,370.77 and 16,550.07 is: 22,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,978.81 : 41,370.77 = 16,550.07 : x
  2. Step 2: Convert to fraction form
    29,978.81/41,370.77 = 16,550.07/x
  3. Step 3: Cross multiply
    29,978.81x = 41,370.77 × 16,550.07
  4. Step 4: Simplify right side
    29,978.81x = 684,689,056.70
  5. Step 5: Solve for x
    x = 684,689,056.70/29,978.81
  6. Step 6: Final answer
    x = 22,839.10

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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.