Home / 11,885.10-17,827.77-3,120.90

Finding the Fourth Proportional to 11,885.10, 17,827.77 and 3,120.90

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Solution

The fourth proportional to 11,885.10, 17,827.77 and 3,120.90 is: 4,681.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.10 : 17,827.77 = 3,120.90 : x
  2. Step 2: Convert to fraction form
    11,885.10/17,827.77 = 3,120.90/x
  3. Step 3: Cross multiply
    11,885.10x = 17,827.77 × 3,120.90
  4. Step 4: Simplify right side
    11,885.10x = 55,638,687.39
  5. Step 5: Solve for x
    x = 55,638,687.39/11,885.10
  6. Step 6: Final answer
    x = 4,681.38

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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.