Home / 21,715.38-29,991.78-14,629.50

Finding the Fourth Proportional to 21,715.38, 29,991.78 and 14,629.50

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Solution

The fourth proportional to 21,715.38, 29,991.78 and 14,629.50 is: 20,205.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.38 : 29,991.78 = 14,629.50 : x
  2. Step 2: Convert to fraction form
    21,715.38/29,991.78 = 14,629.50/x
  3. Step 3: Cross multiply
    21,715.38x = 29,991.78 × 14,629.50
  4. Step 4: Simplify right side
    21,715.38x = 438,764,745.51
  5. Step 5: Solve for x
    x = 438,764,745.51/21,715.38
  6. Step 6: Final answer
    x = 20,205.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.