Home / 28,104.21-38,782.62-15,357.09

Finding the Fourth Proportional to 28,104.21, 38,782.62 and 15,357.09

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Solution

The fourth proportional to 28,104.21, 38,782.62 and 15,357.09 is: 21,192.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.21 : 38,782.62 = 15,357.09 : x
  2. Step 2: Convert to fraction form
    28,104.21/38,782.62 = 15,357.09/x
  3. Step 3: Cross multiply
    28,104.21x = 38,782.62 × 15,357.09
  4. Step 4: Simplify right side
    28,104.21x = 595,588,185.78
  5. Step 5: Solve for x
    x = 595,588,185.78/28,104.21
  6. Step 6: Final answer
    x = 21,192.13

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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.