Home / 28,072.82-38,738.84-15,323.47

Finding the Fourth Proportional to 28,072.82, 38,738.84 and 15,323.47

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Solution

The fourth proportional to 28,072.82, 38,738.84 and 15,323.47 is: 21,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.82 : 38,738.84 = 15,323.47 : x
  2. Step 2: Convert to fraction form
    28,072.82/38,738.84 = 15,323.47/x
  3. Step 3: Cross multiply
    28,072.82x = 38,738.84 × 15,323.47
  4. Step 4: Simplify right side
    28,072.82x = 593,613,279.11
  5. Step 5: Solve for x
    x = 593,613,279.11/28,072.82
  6. Step 6: Final answer
    x = 21,145.48

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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.