Home / 21,004.92-28,971.68-14,278.82

Finding the Fourth Proportional to 21,004.92, 28,971.68 and 14,278.82

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Solution

The fourth proportional to 21,004.92, 28,971.68 and 14,278.82 is: 19,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.92 : 28,971.68 = 14,278.82 : x
  2. Step 2: Convert to fraction form
    21,004.92/28,971.68 = 14,278.82/x
  3. Step 3: Cross multiply
    21,004.92x = 28,971.68 × 14,278.82
  4. Step 4: Simplify right side
    21,004.92x = 413,681,187.57
  5. Step 5: Solve for x
    x = 413,681,187.57/21,004.92
  6. Step 6: Final answer
    x = 19,694.49

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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.