Home / 12,115.94-16,720.48-6,810.74

Finding the Fourth Proportional to 12,115.94, 16,720.48 and 6,810.74

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Solution

The fourth proportional to 12,115.94, 16,720.48 and 6,810.74 is: 9,399.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.94 : 16,720.48 = 6,810.74 : x
  2. Step 2: Convert to fraction form
    12,115.94/16,720.48 = 6,810.74/x
  3. Step 3: Cross multiply
    12,115.94x = 16,720.48 × 6,810.74
  4. Step 4: Simplify right side
    12,115.94x = 113,878,841.96
  5. Step 5: Solve for x
    x = 113,878,841.96/12,115.94
  6. Step 6: Final answer
    x = 9,399.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.