Home / 13,522.01-18,662.60-8,490.56

Finding the Fourth Proportional to 13,522.01, 18,662.60 and 8,490.56

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Solution

The fourth proportional to 13,522.01, 18,662.60 and 8,490.56 is: 11,718.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,522.01 : 18,662.60 = 8,490.56 : x
  2. Step 2: Convert to fraction form
    13,522.01/18,662.60 = 8,490.56/x
  3. Step 3: Cross multiply
    13,522.01x = 18,662.60 × 8,490.56
  4. Step 4: Simplify right side
    13,522.01x = 158,455,852.97
  5. Step 5: Solve for x
    x = 158,455,852.97/13,522.01
  6. Step 6: Final answer
    x = 11,718.37

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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.