Home / 10,438.79-15,659.81-3,512.75

Finding the Fourth Proportional to 10,438.79, 15,659.81 and 3,512.75

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Solution

The fourth proportional to 10,438.79, 15,659.81 and 3,512.75 is: 5,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,438.79 : 15,659.81 = 3,512.75 : x
  2. Step 2: Convert to fraction form
    10,438.79/15,659.81 = 3,512.75/x
  3. Step 3: Cross multiply
    10,438.79x = 15,659.81 × 3,512.75
  4. Step 4: Simplify right side
    10,438.79x = 55,008,980.01
  5. Step 5: Solve for x
    x = 55,008,980.01/10,438.79
  6. Step 6: Final answer
    x = 5,269.67

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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.