Home / 28,028.25-38,678.99-15,453.81

Finding the Fourth Proportional to 28,028.25, 38,678.99 and 15,453.81

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Solution

The fourth proportional to 28,028.25, 38,678.99 and 15,453.81 is: 21,326.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.25 : 38,678.99 = 15,453.81 : x
  2. Step 2: Convert to fraction form
    28,028.25/38,678.99 = 15,453.81/x
  3. Step 3: Cross multiply
    28,028.25x = 38,678.99 × 15,453.81
  4. Step 4: Simplify right side
    28,028.25x = 597,737,685.18
  5. Step 5: Solve for x
    x = 597,737,685.18/28,028.25
  6. Step 6: Final answer
    x = 21,326.26

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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.