Home / 20,803.91-28,712.81-16,361.46

Finding the Fourth Proportional to 20,803.91, 28,712.81 and 16,361.46

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Solution

The fourth proportional to 20,803.91, 28,712.81 and 16,361.46 is: 22,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.91 : 28,712.81 = 16,361.46 : x
  2. Step 2: Convert to fraction form
    20,803.91/28,712.81 = 16,361.46/x
  3. Step 3: Cross multiply
    20,803.91x = 28,712.81 × 16,361.46
  4. Step 4: Simplify right side
    20,803.91x = 469,783,533.21
  5. Step 5: Solve for x
    x = 469,783,533.21/20,803.91
  6. Step 6: Final answer
    x = 22,581.51

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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.