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Finding the Fourth Proportional to 29,559.78, 40,790.86 and 16,811.19

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Solution

The fourth proportional to 29,559.78, 40,790.86 and 16,811.19 is: 23,198.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,559.78 : 40,790.86 = 16,811.19 : x
  2. Step 2: Convert to fraction form
    29,559.78/40,790.86 = 16,811.19/x
  3. Step 3: Cross multiply
    29,559.78x = 40,790.86 × 16,811.19
  4. Step 4: Simplify right side
    29,559.78x = 685,742,855.70
  5. Step 5: Solve for x
    x = 685,742,855.70/29,559.78
  6. Step 6: Final answer
    x = 23,198.51

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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.