Home / 10,421.87-15,634.43-3,494.75

Finding the Fourth Proportional to 10,421.87, 15,634.43 and 3,494.75

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Solution

The fourth proportional to 10,421.87, 15,634.43 and 3,494.75 is: 5,242.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.87 : 15,634.43 = 3,494.75 : x
  2. Step 2: Convert to fraction form
    10,421.87/15,634.43 = 3,494.75/x
  3. Step 3: Cross multiply
    10,421.87x = 15,634.43 × 3,494.75
  4. Step 4: Simplify right side
    10,421.87x = 54,638,424.24
  5. Step 5: Solve for x
    x = 54,638,424.24/10,421.87
  6. Step 6: Final answer
    x = 5,242.67

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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.