Home / 20,943.07-28,906.00-12,883.66

Finding the Fourth Proportional to 20,943.07, 28,906.00 and 12,883.66

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Solution

The fourth proportional to 20,943.07, 28,906.00 and 12,883.66 is: 17,782.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.07 : 28,906.00 = 12,883.66 : x
  2. Step 2: Convert to fraction form
    20,943.07/28,906.00 = 12,883.66/x
  3. Step 3: Cross multiply
    20,943.07x = 28,906.00 × 12,883.66
  4. Step 4: Simplify right side
    20,943.07x = 372,414,971.49
  5. Step 5: Solve for x
    x = 372,414,971.49/20,943.07
  6. Step 6: Final answer
    x = 17,782.26

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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.