Home / 11,453.06-15,805.80-6,418.40

Finding the Fourth Proportional to 11,453.06, 15,805.80 and 6,418.40

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Solution

The fourth proportional to 11,453.06, 15,805.80 and 6,418.40 is: 8,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,453.06 : 15,805.80 = 6,418.40 : x
  2. Step 2: Convert to fraction form
    11,453.06/15,805.80 = 6,418.40/x
  3. Step 3: Cross multiply
    11,453.06x = 15,805.80 × 6,418.40
  4. Step 4: Simplify right side
    11,453.06x = 101,447,867.69
  5. Step 5: Solve for x
    x = 101,447,867.69/11,453.06
  6. Step 6: Final answer
    x = 8,857.71

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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.