Home / 20,935.08-31,394.58-8,450.76

Finding the Fourth Proportional to 20,935.08, 31,394.58 and 8,450.76

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Solution

The fourth proportional to 20,935.08, 31,394.58 and 8,450.76 is: 12,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.08 : 31,394.58 = 8,450.76 : x
  2. Step 2: Convert to fraction form
    20,935.08/31,394.58 = 8,450.76/x
  3. Step 3: Cross multiply
    20,935.08x = 31,394.58 × 8,450.76
  4. Step 4: Simplify right side
    20,935.08x = 265,308,060.88
  5. Step 5: Solve for x
    x = 265,308,060.88/20,935.08
  6. Step 6: Final answer
    x = 12,672.89

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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.