Home / 12,515.72-18,777.83-10,777.05

Finding the Fourth Proportional to 12,515.72, 18,777.83 and 10,777.05

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Solution

The fourth proportional to 12,515.72, 18,777.83 and 10,777.05 is: 16,169.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.72 : 18,777.83 = 10,777.05 : x
  2. Step 2: Convert to fraction form
    12,515.72/18,777.83 = 10,777.05/x
  3. Step 3: Cross multiply
    12,515.72x = 18,777.83 × 10,777.05
  4. Step 4: Simplify right side
    12,515.72x = 202,369,558.92
  5. Step 5: Solve for x
    x = 202,369,558.92/12,515.72
  6. Step 6: Final answer
    x = 16,169.24

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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.