Home / 10,991.63-16,485.73-3,970.55

Finding the Fourth Proportional to 10,991.63, 16,485.73 and 3,970.55

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Solution

The fourth proportional to 10,991.63, 16,485.73 and 3,970.55 is: 5,955.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.63 : 16,485.73 = 3,970.55 : x
  2. Step 2: Convert to fraction form
    10,991.63/16,485.73 = 3,970.55/x
  3. Step 3: Cross multiply
    10,991.63x = 16,485.73 × 3,970.55
  4. Step 4: Simplify right side
    10,991.63x = 65,457,446.54
  5. Step 5: Solve for x
    x = 65,457,446.54/10,991.63
  6. Step 6: Final answer
    x = 5,955.21

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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.