Home / 11,428.77-15,770.96-6,392.12

Finding the Fourth Proportional to 11,428.77, 15,770.96 and 6,392.12

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Solution

The fourth proportional to 11,428.77, 15,770.96 and 6,392.12 is: 8,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.77 : 15,770.96 = 6,392.12 : x
  2. Step 2: Convert to fraction form
    11,428.77/15,770.96 = 6,392.12/x
  3. Step 3: Cross multiply
    11,428.77x = 15,770.96 × 6,392.12
  4. Step 4: Simplify right side
    11,428.77x = 100,809,758.02
  5. Step 5: Solve for x
    x = 100,809,758.02/11,428.77
  6. Step 6: Final answer
    x = 8,820.70

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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.