Home / 39,776.57-54,892.95-21,872.87

Finding the Fourth Proportional to 39,776.57, 54,892.95 and 21,872.87

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Solution

The fourth proportional to 39,776.57, 54,892.95 and 21,872.87 is: 30,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,776.57 : 54,892.95 = 21,872.87 : x
  2. Step 2: Convert to fraction form
    39,776.57/54,892.95 = 21,872.87/x
  3. Step 3: Cross multiply
    39,776.57x = 54,892.95 × 21,872.87
  4. Step 4: Simplify right side
    39,776.57x = 1,200,666,359.27
  5. Step 5: Solve for x
    x = 1,200,666,359.27/39,776.57
  6. Step 6: Final answer
    x = 30,185.27

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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.