Home / 11,280.90-16,921.14-3,885.20

Finding the Fourth Proportional to 11,280.90, 16,921.14 and 3,885.20

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Solution

The fourth proportional to 11,280.90, 16,921.14 and 3,885.20 is: 5,827.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.90 : 16,921.14 = 3,885.20 : x
  2. Step 2: Convert to fraction form
    11,280.90/16,921.14 = 3,885.20/x
  3. Step 3: Cross multiply
    11,280.90x = 16,921.14 × 3,885.20
  4. Step 4: Simplify right side
    11,280.90x = 65,741,977.41
  5. Step 5: Solve for x
    x = 65,741,977.41/11,280.90
  6. Step 6: Final answer
    x = 5,827.72

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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.