Home / 21,619.17-29,855.79-14,922.09

Finding the Fourth Proportional to 21,619.17, 29,855.79 and 14,922.09

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Solution

The fourth proportional to 21,619.17, 29,855.79 and 14,922.09 is: 20,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.17 : 29,855.79 = 14,922.09 : x
  2. Step 2: Convert to fraction form
    21,619.17/29,855.79 = 14,922.09/x
  3. Step 3: Cross multiply
    21,619.17x = 29,855.79 × 14,922.09
  4. Step 4: Simplify right side
    21,619.17x = 445,510,785.40
  5. Step 5: Solve for x
    x = 445,510,785.40/21,619.17
  6. Step 6: Final answer
    x = 20,607.21

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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.