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Finding the Fourth Proportional to 20,804.92, 28,703.78 and 11,846.08

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Solution

The fourth proportional to 20,804.92, 28,703.78 and 11,846.08 is: 16,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.92 : 28,703.78 = 11,846.08 : x
  2. Step 2: Convert to fraction form
    20,804.92/28,703.78 = 11,846.08/x
  3. Step 3: Cross multiply
    20,804.92x = 28,703.78 × 11,846.08
  4. Step 4: Simplify right side
    20,804.92x = 340,027,274.18
  5. Step 5: Solve for x
    x = 340,027,274.18/20,804.92
  6. Step 6: Final answer
    x = 16,343.60

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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.