Home / 28,173.25-38,879.09-15,598.81

Finding the Fourth Proportional to 28,173.25, 38,879.09 and 15,598.81

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Solution

The fourth proportional to 28,173.25, 38,879.09 and 15,598.81 is: 21,526.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.25 : 38,879.09 = 15,598.81 : x
  2. Step 2: Convert to fraction form
    28,173.25/38,879.09 = 15,598.81/x
  3. Step 3: Cross multiply
    28,173.25x = 38,879.09 × 15,598.81
  4. Step 4: Simplify right side
    28,173.25x = 606,467,537.88
  5. Step 5: Solve for x
    x = 606,467,537.88/28,173.25
  6. Step 6: Final answer
    x = 21,526.36

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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.