Home / 21,426.87-29,553.14-13,867.37

Finding the Fourth Proportional to 21,426.87, 29,553.14 and 13,867.37

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Solution

The fourth proportional to 21,426.87, 29,553.14 and 13,867.37 is: 19,126.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.87 : 29,553.14 = 13,867.37 : x
  2. Step 2: Convert to fraction form
    21,426.87/29,553.14 = 13,867.37/x
  3. Step 3: Cross multiply
    21,426.87x = 29,553.14 × 13,867.37
  4. Step 4: Simplify right side
    21,426.87x = 409,824,109.94
  5. Step 5: Solve for x
    x = 409,824,109.94/21,426.87
  6. Step 6: Final answer
    x = 19,126.64

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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.