Home / 11,427.39-15,769.38-6,647.71

Finding the Fourth Proportional to 11,427.39, 15,769.38 and 6,647.71

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Solution

The fourth proportional to 11,427.39, 15,769.38 and 6,647.71 is: 9,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.39 : 15,769.38 = 6,647.71 : x
  2. Step 2: Convert to fraction form
    11,427.39/15,769.38 = 6,647.71/x
  3. Step 3: Cross multiply
    11,427.39x = 15,769.38 × 6,647.71
  4. Step 4: Simplify right side
    11,427.39x = 104,830,265.12
  5. Step 5: Solve for x
    x = 104,830,265.12/11,427.39
  6. Step 6: Final answer
    x = 9,173.60

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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.