Home / 10,102.87-15,140.26-8,783.92

Finding the Fourth Proportional to 10,102.87, 15,140.26 and 8,783.92

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Solution

The fourth proportional to 10,102.87, 15,140.26 and 8,783.92 is: 13,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.87 : 15,140.26 = 8,783.92 : x
  2. Step 2: Convert to fraction form
    10,102.87/15,140.26 = 8,783.92/x
  3. Step 3: Cross multiply
    10,102.87x = 15,140.26 × 8,783.92
  4. Step 4: Simplify right side
    10,102.87x = 132,990,832.62
  5. Step 5: Solve for x
    x = 132,990,832.62/10,102.87
  6. Step 6: Final answer
    x = 13,163.67

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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.