Home / 10,420.79-15,630.98-2,629.67

Finding the Fourth Proportional to 10,420.79, 15,630.98 and 2,629.67

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Solution

The fourth proportional to 10,420.79, 15,630.98 and 2,629.67 is: 3,944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.79 : 15,630.98 = 2,629.67 : x
  2. Step 2: Convert to fraction form
    10,420.79/15,630.98 = 2,629.67/x
  3. Step 3: Cross multiply
    10,420.79x = 15,630.98 × 2,629.67
  4. Step 4: Simplify right side
    10,420.79x = 41,104,227.87
  5. Step 5: Solve for x
    x = 41,104,227.87/10,420.79
  6. Step 6: Final answer
    x = 3,944.45

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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.