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Finding the Fourth Proportional to 43,491.08, 65,218.16 and 15,418.20

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Solution

The fourth proportional to 43,491.08, 65,218.16 and 15,418.20 is: 23,120.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,491.08 : 65,218.16 = 15,418.20 : x
  2. Step 2: Convert to fraction form
    43,491.08/65,218.16 = 15,418.20/x
  3. Step 3: Cross multiply
    43,491.08x = 65,218.16 × 15,418.20
  4. Step 4: Simplify right side
    43,491.08x = 1,005,546,550.77
  5. Step 5: Solve for x
    x = 1,005,546,550.77/43,491.08
  6. Step 6: Final answer
    x = 23,120.76

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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.