Home / 18,780.54-28,189.04-10,021.61

Finding the Fourth Proportional to 18,780.54, 28,189.04 and 10,021.61

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Solution

The fourth proportional to 18,780.54, 28,189.04 and 10,021.61 is: 15,042.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.54 : 28,189.04 = 10,021.61 : x
  2. Step 2: Convert to fraction form
    18,780.54/28,189.04 = 10,021.61/x
  3. Step 3: Cross multiply
    18,780.54x = 28,189.04 × 10,021.61
  4. Step 4: Simplify right side
    18,780.54x = 282,499,374.10
  5. Step 5: Solve for x
    x = 282,499,374.10/18,780.54
  6. Step 6: Final answer
    x = 15,042.13

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1.5x scale

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.