Home / 11,281.72-16,929.58-5,438.92

Finding the Fourth Proportional to 11,281.72, 16,929.58 and 5,438.92

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Solution

The fourth proportional to 11,281.72, 16,929.58 and 5,438.92 is: 8,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,281.72 : 16,929.58 = 5,438.92 : x
  2. Step 2: Convert to fraction form
    11,281.72/16,929.58 = 5,438.92/x
  3. Step 3: Cross multiply
    11,281.72x = 16,929.58 × 5,438.92
  4. Step 4: Simplify right side
    11,281.72x = 92,078,631.25
  5. Step 5: Solve for x
    x = 92,078,631.25/11,281.72
  6. Step 6: Final answer
    x = 8,161.75

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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.