Home / 39,028.35-53,859.21-21,123.51

Finding the Fourth Proportional to 39,028.35, 53,859.21 and 21,123.51

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Solution

The fourth proportional to 39,028.35, 53,859.21 and 21,123.51 is: 29,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,028.35 : 53,859.21 = 21,123.51 : x
  2. Step 2: Convert to fraction form
    39,028.35/53,859.21 = 21,123.51/x
  3. Step 3: Cross multiply
    39,028.35x = 53,859.21 × 21,123.51
  4. Step 4: Simplify right side
    39,028.35x = 1,137,695,561.03
  5. Step 5: Solve for x
    x = 1,137,695,561.03/39,028.35
  6. Step 6: Final answer
    x = 29,150.49

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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.