Home / 11,428.08-15,770.67-6,392.28

Finding the Fourth Proportional to 11,428.08, 15,770.67 and 6,392.28

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Solution

The fourth proportional to 11,428.08, 15,770.67 and 6,392.28 is: 8,821.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.08 : 15,770.67 = 6,392.28 : x
  2. Step 2: Convert to fraction form
    11,428.08/15,770.67 = 6,392.28/x
  3. Step 3: Cross multiply
    11,428.08x = 15,770.67 × 6,392.28
  4. Step 4: Simplify right side
    11,428.08x = 100,810,538.43
  5. Step 5: Solve for x
    x = 100,810,538.43/11,428.08
  6. Step 6: Final answer
    x = 8,821.30

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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.