Home / 20,188.63-30,298.82-13,992.21

Finding the Fourth Proportional to 20,188.63, 30,298.82 and 13,992.21

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Solution

The fourth proportional to 20,188.63, 30,298.82 and 13,992.21 is: 20,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.63 : 30,298.82 = 13,992.21 : x
  2. Step 2: Convert to fraction form
    20,188.63/30,298.82 = 13,992.21/x
  3. Step 3: Cross multiply
    20,188.63x = 30,298.82 × 13,992.21
  4. Step 4: Simplify right side
    20,188.63x = 423,947,452.19
  5. Step 5: Solve for x
    x = 423,947,452.19/20,188.63
  6. Step 6: Final answer
    x = 20,999.32

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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.