Home / 28,288.08-38,997-19,878.48

Finding the Fourth Proportional to 28,288.08, 38,997 and 19,878.48

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Solution

The fourth proportional to 28,288.08, 38,997 and 19,878.48 is: 27,403.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.08 : 38,997 = 19,878.48 : x
  2. Step 2: Convert to fraction form
    28,288.08/38,997 = 19,878.48/x
  3. Step 3: Cross multiply
    28,288.08x = 38,997 × 19,878.48
  4. Step 4: Simplify right side
    28,288.08x = 775,201,084.56
  5. Step 5: Solve for x
    x = 775,201,084.56/28,288.08
  6. Step 6: Final answer
    x = 27,403.81

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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.