Home / 28,388.62-39,176.34-15,467.84

Finding the Fourth Proportional to 28,388.62, 39,176.34 and 15,467.84

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Solution

The fourth proportional to 28,388.62, 39,176.34 and 15,467.84 is: 21,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.62 : 39,176.34 = 15,467.84 : x
  2. Step 2: Convert to fraction form
    28,388.62/39,176.34 = 15,467.84/x
  3. Step 3: Cross multiply
    28,388.62x = 39,176.34 × 15,467.84
  4. Step 4: Simplify right side
    28,388.62x = 605,973,251.93
  5. Step 5: Solve for x
    x = 605,973,251.93/28,388.62
  6. Step 6: Final answer
    x = 21,345.64

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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.