Home / 11,428.58-15,771.70-6,392.58

Finding the Fourth Proportional to 11,428.58, 15,771.70 and 6,392.58

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Solution

The fourth proportional to 11,428.58, 15,771.70 and 6,392.58 is: 8,821.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.58 : 15,771.70 = 6,392.58 : x
  2. Step 2: Convert to fraction form
    11,428.58/15,771.70 = 6,392.58/x
  3. Step 3: Cross multiply
    11,428.58x = 15,771.70 × 6,392.58
  4. Step 4: Simplify right side
    11,428.58x = 100,821,853.99
  5. Step 5: Solve for x
    x = 100,821,853.99/11,428.58
  6. Step 6: Final answer
    x = 8,821.91

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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.