Home / 10,420.96-15,630.88-2,629.84

Finding the Fourth Proportional to 10,420.96, 15,630.88 and 2,629.84

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Solution

The fourth proportional to 10,420.96, 15,630.88 and 2,629.84 is: 3,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.96 : 15,630.88 = 2,629.84 : x
  2. Step 2: Convert to fraction form
    10,420.96/15,630.88 = 2,629.84/x
  3. Step 3: Cross multiply
    10,420.96x = 15,630.88 × 2,629.84
  4. Step 4: Simplify right side
    10,420.96x = 41,106,713.46
  5. Step 5: Solve for x
    x = 41,106,713.46/10,420.96
  6. Step 6: Final answer
    x = 3,944.62

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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.