Home / 28,945.75-39,943.77-16,200.55

Finding the Fourth Proportional to 28,945.75, 39,943.77 and 16,200.55

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Solution

The fourth proportional to 28,945.75, 39,943.77 and 16,200.55 is: 22,356.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.75 : 39,943.77 = 16,200.55 : x
  2. Step 2: Convert to fraction form
    28,945.75/39,943.77 = 16,200.55/x
  3. Step 3: Cross multiply
    28,945.75x = 39,943.77 × 16,200.55
  4. Step 4: Simplify right side
    28,945.75x = 647,111,043.07
  5. Step 5: Solve for x
    x = 647,111,043.07/28,945.75
  6. Step 6: Final answer
    x = 22,356.00

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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.