Home / 21,849.68-30,165-14,419.28

Finding the Fourth Proportional to 21,849.68, 30,165 and 14,419.28

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Solution

The fourth proportional to 21,849.68, 30,165 and 14,419.28 is: 19,906.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,849.68 : 30,165 = 14,419.28 : x
  2. Step 2: Convert to fraction form
    21,849.68/30,165 = 14,419.28/x
  3. Step 3: Cross multiply
    21,849.68x = 30,165 × 14,419.28
  4. Step 4: Simplify right side
    21,849.68x = 434,957,581.20
  5. Step 5: Solve for x
    x = 434,957,581.20/21,849.68
  6. Step 6: Final answer
    x = 19,906.82

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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.