Home / 27,878.99-38,471.96-15,942.02

Finding the Fourth Proportional to 27,878.99, 38,471.96 and 15,942.02

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Solution

The fourth proportional to 27,878.99, 38,471.96 and 15,942.02 is: 21,999.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.99 : 38,471.96 = 15,942.02 : x
  2. Step 2: Convert to fraction form
    27,878.99/38,471.96 = 15,942.02/x
  3. Step 3: Cross multiply
    27,878.99x = 38,471.96 × 15,942.02
  4. Step 4: Simplify right side
    27,878.99x = 613,320,603.25
  5. Step 5: Solve for x
    x = 613,320,603.25/27,878.99
  6. Step 6: Final answer
    x = 21,999.39

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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.