Home / 21,992.58-30,356.64-15,190.09

Finding the Fourth Proportional to 21,992.58, 30,356.64 and 15,190.09

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Solution

The fourth proportional to 21,992.58, 30,356.64 and 15,190.09 is: 20,967.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.58 : 30,356.64 = 15,190.09 : x
  2. Step 2: Convert to fraction form
    21,992.58/30,356.64 = 15,190.09/x
  3. Step 3: Cross multiply
    21,992.58x = 30,356.64 × 15,190.09
  4. Step 4: Simplify right side
    21,992.58x = 461,120,017.81
  5. Step 5: Solve for x
    x = 461,120,017.81/21,992.58
  6. Step 6: Final answer
    x = 20,967.07

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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.