Home / 10,722.80-16,100.36-8,757.20

Finding the Fourth Proportional to 10,722.80, 16,100.36 and 8,757.20

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Solution

The fourth proportional to 10,722.80, 16,100.36 and 8,757.20 is: 13,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,722.80 : 16,100.36 = 8,757.20 : x
  2. Step 2: Convert to fraction form
    10,722.80/16,100.36 = 8,757.20/x
  3. Step 3: Cross multiply
    10,722.80x = 16,100.36 × 8,757.20
  4. Step 4: Simplify right side
    10,722.80x = 140,994,072.59
  5. Step 5: Solve for x
    x = 140,994,072.59/10,722.80
  6. Step 6: Final answer
    x = 13,149.00

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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.