Home / 28,321.44-39,086.64-16,384.56

Finding the Fourth Proportional to 28,321.44, 39,086.64 and 16,384.56

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Solution

The fourth proportional to 28,321.44, 39,086.64 and 16,384.56 is: 22,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.44 : 39,086.64 = 16,384.56 : x
  2. Step 2: Convert to fraction form
    28,321.44/39,086.64 = 16,384.56/x
  3. Step 3: Cross multiply
    28,321.44x = 39,086.64 × 16,384.56
  4. Step 4: Simplify right side
    28,321.44x = 640,417,398.28
  5. Step 5: Solve for x
    x = 640,417,398.28/28,321.44
  6. Step 6: Final answer
    x = 22,612.46

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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.