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Finding the Fourth Proportional to 16,764.80, 25,118.40 and 10,918.40

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Solution

The fourth proportional to 16,764.80, 25,118.40 and 10,918.40 is: 16,358.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,764.80 : 25,118.40 = 10,918.40 : x
  2. Step 2: Convert to fraction form
    16,764.80/25,118.40 = 10,918.40/x
  3. Step 3: Cross multiply
    16,764.80x = 25,118.40 × 10,918.40
  4. Step 4: Simplify right side
    16,764.80x = 274,252,738.56
  5. Step 5: Solve for x
    x = 274,252,738.56/16,764.80
  6. Step 6: Final answer
    x = 16,358.84

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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.