Home / 20,437.08-28,193.64-11,939.57

Finding the Fourth Proportional to 20,437.08, 28,193.64 and 11,939.57

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Solution

The fourth proportional to 20,437.08, 28,193.64 and 11,939.57 is: 16,471.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.08 : 28,193.64 = 11,939.57 : x
  2. Step 2: Convert to fraction form
    20,437.08/28,193.64 = 11,939.57/x
  3. Step 3: Cross multiply
    20,437.08x = 28,193.64 × 11,939.57
  4. Step 4: Simplify right side
    20,437.08x = 336,619,797.37
  5. Step 5: Solve for x
    x = 336,619,797.37/20,437.08
  6. Step 6: Final answer
    x = 16,471.03

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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.