Home / 20,258.30-30,366.70-7,775.09

Finding the Fourth Proportional to 20,258.30, 30,366.70 and 7,775.09

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Solution

The fourth proportional to 20,258.30, 30,366.70 and 7,775.09 is: 11,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.30 : 30,366.70 = 7,775.09 : x
  2. Step 2: Convert to fraction form
    20,258.30/30,366.70 = 7,775.09/x
  3. Step 3: Cross multiply
    20,258.30x = 30,366.70 × 7,775.09
  4. Step 4: Simplify right side
    20,258.30x = 236,103,768.11
  5. Step 5: Solve for x
    x = 236,103,768.11/20,258.30
  6. Step 6: Final answer
    x = 11,654.67

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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.