Home / 28,172.13-38,878.82-15,596.88

Finding the Fourth Proportional to 28,172.13, 38,878.82 and 15,596.88

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Solution

The fourth proportional to 28,172.13, 38,878.82 and 15,596.88 is: 21,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.13 : 38,878.82 = 15,596.88 : x
  2. Step 2: Convert to fraction form
    28,172.13/38,878.82 = 15,596.88/x
  3. Step 3: Cross multiply
    28,172.13x = 38,878.82 × 15,596.88
  4. Step 4: Simplify right side
    28,172.13x = 606,388,290.08
  5. Step 5: Solve for x
    x = 606,388,290.08/28,172.13
  6. Step 6: Final answer
    x = 21,524.40

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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.