Home / 18,765.83-28,147.75-4,725.84

Finding the Fourth Proportional to 18,765.83, 28,147.75 and 4,725.84

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Solution

The fourth proportional to 18,765.83, 28,147.75 and 4,725.84 is: 7,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.83 : 28,147.75 = 4,725.84 : x
  2. Step 2: Convert to fraction form
    18,765.83/28,147.75 = 4,725.84/x
  3. Step 3: Cross multiply
    18,765.83x = 28,147.75 × 4,725.84
  4. Step 4: Simplify right side
    18,765.83x = 133,021,883.18
  5. Step 5: Solve for x
    x = 133,021,883.18/18,765.83
  6. Step 6: Final answer
    x = 7,088.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.