Home / 12,116.49-16,720.43-6,811.64

Finding the Fourth Proportional to 12,116.49, 16,720.43 and 6,811.64

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Solution

The fourth proportional to 12,116.49, 16,720.43 and 6,811.64 is: 9,399.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.49 : 16,720.43 = 6,811.64 : x
  2. Step 2: Convert to fraction form
    12,116.49/16,720.43 = 6,811.64/x
  3. Step 3: Cross multiply
    12,116.49x = 16,720.43 × 6,811.64
  4. Step 4: Simplify right side
    12,116.49x = 113,893,588.90
  5. Step 5: Solve for x
    x = 113,893,588.90/12,116.49
  6. Step 6: Final answer
    x = 9,399.89

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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.