Home / 13,688.56-20,549.82-13,625.36

Finding the Fourth Proportional to 13,688.56, 20,549.82 and 13,625.36

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Solution

The fourth proportional to 13,688.56, 20,549.82 and 13,625.36 is: 20,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.56 : 20,549.82 = 13,625.36 : x
  2. Step 2: Convert to fraction form
    13,688.56/20,549.82 = 13,625.36/x
  3. Step 3: Cross multiply
    13,688.56x = 20,549.82 × 13,625.36
  4. Step 4: Simplify right side
    13,688.56x = 279,998,695.44
  5. Step 5: Solve for x
    x = 279,998,695.44/13,688.56
  6. Step 6: Final answer
    x = 20,454.94

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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.