Home / 20,924.88-28,922.24-18,387.92

Finding the Fourth Proportional to 20,924.88, 28,922.24 and 18,387.92

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Solution

The fourth proportional to 20,924.88, 28,922.24 and 18,387.92 is: 25,415.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.88 : 28,922.24 = 18,387.92 : x
  2. Step 2: Convert to fraction form
    20,924.88/28,922.24 = 18,387.92/x
  3. Step 3: Cross multiply
    20,924.88x = 28,922.24 × 18,387.92
  4. Step 4: Simplify right side
    20,924.88x = 531,819,835.34
  5. Step 5: Solve for x
    x = 531,819,835.34/20,924.88
  6. Step 6: Final answer
    x = 25,415.67

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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.