Home / 21,161.32-31,738.74-5,580.16

Finding the Fourth Proportional to 21,161.32, 31,738.74 and 5,580.16

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Solution

The fourth proportional to 21,161.32, 31,738.74 and 5,580.16 is: 8,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.32 : 31,738.74 = 5,580.16 : x
  2. Step 2: Convert to fraction form
    21,161.32/31,738.74 = 5,580.16/x
  3. Step 3: Cross multiply
    21,161.32x = 31,738.74 × 5,580.16
  4. Step 4: Simplify right side
    21,161.32x = 177,107,147.13
  5. Step 5: Solve for x
    x = 177,107,147.13/21,161.32
  6. Step 6: Final answer
    x = 8,369.38

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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.