Home / 21,104.47-31,645.01-8,633.25

Finding the Fourth Proportional to 21,104.47, 31,645.01 and 8,633.25

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Solution

The fourth proportional to 21,104.47, 31,645.01 and 8,633.25 is: 12,945.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.47 : 31,645.01 = 8,633.25 : x
  2. Step 2: Convert to fraction form
    21,104.47/31,645.01 = 8,633.25/x
  3. Step 3: Cross multiply
    21,104.47x = 31,645.01 × 8,633.25
  4. Step 4: Simplify right side
    21,104.47x = 273,199,124.36
  5. Step 5: Solve for x
    x = 273,199,124.36/21,104.47
  6. Step 6: Final answer
    x = 12,945.09

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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.