Home / 13,618.44-20,427.42-7,762.56

Finding the Fourth Proportional to 13,618.44, 20,427.42 and 7,762.56

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Solution

The fourth proportional to 13,618.44, 20,427.42 and 7,762.56 is: 11,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.44 : 20,427.42 = 7,762.56 : x
  2. Step 2: Convert to fraction form
    13,618.44/20,427.42 = 7,762.56/x
  3. Step 3: Cross multiply
    13,618.44x = 20,427.42 × 7,762.56
  4. Step 4: Simplify right side
    13,618.44x = 158,569,073.40
  5. Step 5: Solve for x
    x = 158,569,073.40/13,618.44
  6. Step 6: Final answer
    x = 11,643.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.