Home / 10,189.08-15,289.35-7,961.67

Finding the Fourth Proportional to 10,189.08, 15,289.35 and 7,961.67

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Solution

The fourth proportional to 10,189.08, 15,289.35 and 7,961.67 is: 11,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,189.08 : 15,289.35 = 7,961.67 : x
  2. Step 2: Convert to fraction form
    10,189.08/15,289.35 = 7,961.67/x
  3. Step 3: Cross multiply
    10,189.08x = 15,289.35 × 7,961.67
  4. Step 4: Simplify right side
    10,189.08x = 121,728,759.21
  5. Step 5: Solve for x
    x = 121,728,759.21/10,189.08
  6. Step 6: Final answer
    x = 11,946.98

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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.