Home / 14,378.79-21,571.77-11,428.37

Finding the Fourth Proportional to 14,378.79, 21,571.77 and 11,428.37

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Solution

The fourth proportional to 14,378.79, 21,571.77 and 11,428.37 is: 17,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.79 : 21,571.77 = 11,428.37 : x
  2. Step 2: Convert to fraction form
    14,378.79/21,571.77 = 11,428.37/x
  3. Step 3: Cross multiply
    14,378.79x = 21,571.77 × 11,428.37
  4. Step 4: Simplify right side
    14,378.79x = 246,530,004.11
  5. Step 5: Solve for x
    x = 246,530,004.11/14,378.79
  6. Step 6: Final answer
    x = 17,145.39

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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.