Home / 28,535.33-39,387.89-20,039.51

Finding the Fourth Proportional to 28,535.33, 39,387.89 and 20,039.51

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Solution

The fourth proportional to 28,535.33, 39,387.89 and 20,039.51 is: 27,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.33 : 39,387.89 = 20,039.51 : x
  2. Step 2: Convert to fraction form
    28,535.33/39,387.89 = 20,039.51/x
  3. Step 3: Cross multiply
    28,535.33x = 39,387.89 × 20,039.51
  4. Step 4: Simplify right side
    28,535.33x = 789,313,718.40
  5. Step 5: Solve for x
    x = 789,313,718.40/28,535.33
  6. Step 6: Final answer
    x = 27,660.93

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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.