Home / 39,028.80-53,859.42-21,123.63

Finding the Fourth Proportional to 39,028.80, 53,859.42 and 21,123.63

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Solution

The fourth proportional to 39,028.80, 53,859.42 and 21,123.63 is: 29,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,028.80 : 53,859.42 = 21,123.63 : x
  2. Step 2: Convert to fraction form
    39,028.80/53,859.42 = 21,123.63/x
  3. Step 3: Cross multiply
    39,028.80x = 53,859.42 × 21,123.63
  4. Step 4: Simplify right side
    39,028.80x = 1,137,706,460.09
  5. Step 5: Solve for x
    x = 1,137,706,460.09/39,028.80
  6. Step 6: Final answer
    x = 29,150.43

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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.