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Finding the Fourth Proportional to 16,720.56, 25,048.44 and 8,918.64

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Solution

The fourth proportional to 16,720.56, 25,048.44 and 8,918.64 is: 13,360.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,720.56 : 25,048.44 = 8,918.64 : x
  2. Step 2: Convert to fraction form
    16,720.56/25,048.44 = 8,918.64/x
  3. Step 3: Cross multiply
    16,720.56x = 25,048.44 × 8,918.64
  4. Step 4: Simplify right side
    16,720.56x = 223,398,018.92
  5. Step 5: Solve for x
    x = 223,398,018.92/16,720.56
  6. Step 6: Final answer
    x = 13,360.68

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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.