Home / 21,722.99-29,991.26-14,928.71

Finding the Fourth Proportional to 21,722.99, 29,991.26 and 14,928.71

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Solution

The fourth proportional to 21,722.99, 29,991.26 and 14,928.71 is: 20,610.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.99 : 29,991.26 = 14,928.71 : x
  2. Step 2: Convert to fraction form
    21,722.99/29,991.26 = 14,928.71/x
  3. Step 3: Cross multiply
    21,722.99x = 29,991.26 × 14,928.71
  4. Step 4: Simplify right side
    21,722.99x = 447,730,710.44
  5. Step 5: Solve for x
    x = 447,730,710.44/21,722.99
  6. Step 6: Final answer
    x = 20,610.92

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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.