Home / 20,852.70-28,777.21-11,901.04

Finding the Fourth Proportional to 20,852.70, 28,777.21 and 11,901.04

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Solution

The fourth proportional to 20,852.70, 28,777.21 and 11,901.04 is: 16,423.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.70 : 28,777.21 = 11,901.04 : x
  2. Step 2: Convert to fraction form
    20,852.70/28,777.21 = 11,901.04/x
  3. Step 3: Cross multiply
    20,852.70x = 28,777.21 × 11,901.04
  4. Step 4: Simplify right side
    20,852.70x = 342,478,727.30
  5. Step 5: Solve for x
    x = 342,478,727.30/20,852.70
  6. Step 6: Final answer
    x = 16,423.71

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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.