Home / 13,322.70-19,980.63-3,960.29

Finding the Fourth Proportional to 13,322.70, 19,980.63 and 3,960.29

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Solution

The fourth proportional to 13,322.70, 19,980.63 and 3,960.29 is: 5,939.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.70 : 19,980.63 = 3,960.29 : x
  2. Step 2: Convert to fraction form
    13,322.70/19,980.63 = 3,960.29/x
  3. Step 3: Cross multiply
    13,322.70x = 19,980.63 × 3,960.29
  4. Step 4: Simplify right side
    13,322.70x = 79,128,989.28
  5. Step 5: Solve for x
    x = 79,128,989.28/13,322.70
  6. Step 6: Final answer
    x = 5,939.41

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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.