Home / 39,333.92-54,278.94-21,428.84

Finding the Fourth Proportional to 39,333.92, 54,278.94 and 21,428.84

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Solution

The fourth proportional to 39,333.92, 54,278.94 and 21,428.84 is: 29,570.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,333.92 : 54,278.94 = 21,428.84 : x
  2. Step 2: Convert to fraction form
    39,333.92/54,278.94 = 21,428.84/x
  3. Step 3: Cross multiply
    39,333.92x = 54,278.94 × 21,428.84
  4. Step 4: Simplify right side
    39,333.92x = 1,163,134,720.63
  5. Step 5: Solve for x
    x = 1,163,134,720.63/39,333.92
  6. Step 6: Final answer
    x = 29,570.78

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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.