Home / 28,673.12-43,040.82-21,153.09

Finding the Fourth Proportional to 28,673.12, 43,040.82 and 21,153.09

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Solution

The fourth proportional to 28,673.12, 43,040.82 and 21,153.09 is: 31,752.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,673.12 : 43,040.82 = 21,153.09 : x
  2. Step 2: Convert to fraction form
    28,673.12/43,040.82 = 21,153.09/x
  3. Step 3: Cross multiply
    28,673.12x = 43,040.82 × 21,153.09
  4. Step 4: Simplify right side
    28,673.12x = 910,446,579.86
  5. Step 5: Solve for x
    x = 910,446,579.86/28,673.12
  6. Step 6: Final answer
    x = 31,752.61

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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.