Home / 15,523.87-21,422.32-8,450.30

Finding the Fourth Proportional to 15,523.87, 21,422.32 and 8,450.30

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Solution

The fourth proportional to 15,523.87, 21,422.32 and 8,450.30 is: 11,661.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.87 : 21,422.32 = 8,450.30 : x
  2. Step 2: Convert to fraction form
    15,523.87/21,422.32 = 8,450.30/x
  3. Step 3: Cross multiply
    15,523.87x = 21,422.32 × 8,450.30
  4. Step 4: Simplify right side
    15,523.87x = 181,024,923.58
  5. Step 5: Solve for x
    x = 181,024,923.58/15,523.87
  6. Step 6: Final answer
    x = 11,661.07

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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.