Home / 20,437.98-28,199.49-11,935.28

Finding the Fourth Proportional to 20,437.98, 28,199.49 and 11,935.28

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Solution

The fourth proportional to 20,437.98, 28,199.49 and 11,935.28 is: 16,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.98 : 28,199.49 = 11,935.28 : x
  2. Step 2: Convert to fraction form
    20,437.98/28,199.49 = 11,935.28/x
  3. Step 3: Cross multiply
    20,437.98x = 28,199.49 × 11,935.28
  4. Step 4: Simplify right side
    20,437.98x = 336,568,623.25
  5. Step 5: Solve for x
    x = 336,568,623.25/20,437.98
  6. Step 6: Final answer
    x = 16,467.80

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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.