Home / 21,690.44-29,933.49-14,141.64

Finding the Fourth Proportional to 21,690.44, 29,933.49 and 14,141.64

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Solution

The fourth proportional to 21,690.44, 29,933.49 and 14,141.64 is: 19,515.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.44 : 29,933.49 = 14,141.64 : x
  2. Step 2: Convert to fraction form
    21,690.44/29,933.49 = 14,141.64/x
  3. Step 3: Cross multiply
    21,690.44x = 29,933.49 × 14,141.64
  4. Step 4: Simplify right side
    21,690.44x = 423,308,639.52
  5. Step 5: Solve for x
    x = 423,308,639.52/21,690.44
  6. Step 6: Final answer
    x = 19,515.91

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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.