Home / 28,111.82-38,816.64-17,372.30

Finding the Fourth Proportional to 28,111.82, 38,816.64 and 17,372.30

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Solution

The fourth proportional to 28,111.82, 38,816.64 and 17,372.30 is: 23,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.82 : 38,816.64 = 17,372.30 : x
  2. Step 2: Convert to fraction form
    28,111.82/38,816.64 = 17,372.30/x
  3. Step 3: Cross multiply
    28,111.82x = 38,816.64 × 17,372.30
  4. Step 4: Simplify right side
    28,111.82x = 674,334,120.99
  5. Step 5: Solve for x
    x = 674,334,120.99/28,111.82
  6. Step 6: Final answer
    x = 23,987.57

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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.