Home / 28,211.10-38,913.62-18,152.61

Finding the Fourth Proportional to 28,211.10, 38,913.62 and 18,152.61

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Solution

The fourth proportional to 28,211.10, 38,913.62 and 18,152.61 is: 25,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.10 : 38,913.62 = 18,152.61 : x
  2. Step 2: Convert to fraction form
    28,211.10/38,913.62 = 18,152.61/x
  3. Step 3: Cross multiply
    28,211.10x = 38,913.62 × 18,152.61
  4. Step 4: Simplify right side
    28,211.10x = 706,383,676.79
  5. Step 5: Solve for x
    x = 706,383,676.79/28,211.10
  6. Step 6: Final answer
    x = 25,039.21

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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.