Home / 31,886.21-43,991.09-19,945.01

Finding the Fourth Proportional to 31,886.21, 43,991.09 and 19,945.01

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Solution

The fourth proportional to 31,886.21, 43,991.09 and 19,945.01 is: 27,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,886.21 : 43,991.09 = 19,945.01 : x
  2. Step 2: Convert to fraction form
    31,886.21/43,991.09 = 19,945.01/x
  3. Step 3: Cross multiply
    31,886.21x = 43,991.09 × 19,945.01
  4. Step 4: Simplify right side
    31,886.21x = 877,402,630.24
  5. Step 5: Solve for x
    x = 877,402,630.24/31,886.21
  6. Step 6: Final answer
    x = 27,516.68

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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.