Home / 15,620.13-21,555.72-8,450.06

Finding the Fourth Proportional to 15,620.13, 21,555.72 and 8,450.06

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Solution

The fourth proportional to 15,620.13, 21,555.72 and 8,450.06 is: 11,661.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.13 : 21,555.72 = 8,450.06 : x
  2. Step 2: Convert to fraction form
    15,620.13/21,555.72 = 8,450.06/x
  3. Step 3: Cross multiply
    15,620.13x = 21,555.72 × 8,450.06
  4. Step 4: Simplify right side
    15,620.13x = 182,147,019.56
  5. Step 5: Solve for x
    x = 182,147,019.56/15,620.13
  6. Step 6: Final answer
    x = 11,661.04

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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.