Home / 21,199.82-31,830.96-11,858.14

Finding the Fourth Proportional to 21,199.82, 31,830.96 and 11,858.14

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Solution

The fourth proportional to 21,199.82, 31,830.96 and 11,858.14 is: 17,804.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.82 : 31,830.96 = 11,858.14 : x
  2. Step 2: Convert to fraction form
    21,199.82/31,830.96 = 11,858.14/x
  3. Step 3: Cross multiply
    21,199.82x = 31,830.96 × 11,858.14
  4. Step 4: Simplify right side
    21,199.82x = 377,455,980.01
  5. Step 5: Solve for x
    x = 377,455,980.01/21,199.82
  6. Step 6: Final answer
    x = 17,804.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.