Home / 20,992.20-31,493.76-9,302.64

Finding the Fourth Proportional to 20,992.20, 31,493.76 and 9,302.64

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Solution

The fourth proportional to 20,992.20, 31,493.76 and 9,302.64 is: 13,956.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.20 : 31,493.76 = 9,302.64 : x
  2. Step 2: Convert to fraction form
    20,992.20/31,493.76 = 9,302.64/x
  3. Step 3: Cross multiply
    20,992.20x = 31,493.76 × 9,302.64
  4. Step 4: Simplify right side
    20,992.20x = 292,975,111.53
  5. Step 5: Solve for x
    x = 292,975,111.53/20,992.20
  6. Step 6: Final answer
    x = 13,956.38

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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.