Home / 31,861.44-43,975.44-21,810.24

Finding the Fourth Proportional to 31,861.44, 43,975.44 and 21,810.24

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Solution

The fourth proportional to 31,861.44, 43,975.44 and 21,810.24 is: 30,102.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.44 : 43,975.44 = 21,810.24 : x
  2. Step 2: Convert to fraction form
    31,861.44/43,975.44 = 21,810.24/x
  3. Step 3: Cross multiply
    31,861.44x = 43,975.44 × 21,810.24
  4. Step 4: Simplify right side
    31,861.44x = 959,114,900.51
  5. Step 5: Solve for x
    x = 959,114,900.51/31,861.44
  6. Step 6: Final answer
    x = 30,102.69

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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.