Home / 10,890.88-16,315.78-6,435.26

Finding the Fourth Proportional to 10,890.88, 16,315.78 and 6,435.26

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Solution

The fourth proportional to 10,890.88, 16,315.78 and 6,435.26 is: 9,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.88 : 16,315.78 = 6,435.26 : x
  2. Step 2: Convert to fraction form
    10,890.88/16,315.78 = 6,435.26/x
  3. Step 3: Cross multiply
    10,890.88x = 16,315.78 × 6,435.26
  4. Step 4: Simplify right side
    10,890.88x = 104,996,286.40
  5. Step 5: Solve for x
    x = 104,996,286.40/10,890.88
  6. Step 6: Final answer
    x = 9,640.75

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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.