Home / 13,396.06-18,486.78-7,427.98

Finding the Fourth Proportional to 13,396.06, 18,486.78 and 7,427.98

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Solution

The fourth proportional to 13,396.06, 18,486.78 and 7,427.98 is: 10,250.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.06 : 18,486.78 = 7,427.98 : x
  2. Step 2: Convert to fraction form
    13,396.06/18,486.78 = 7,427.98/x
  3. Step 3: Cross multiply
    13,396.06x = 18,486.78 × 7,427.98
  4. Step 4: Simplify right side
    13,396.06x = 137,319,339.67
  5. Step 5: Solve for x
    x = 137,319,339.67/13,396.06
  6. Step 6: Final answer
    x = 10,250.73

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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.