Home / 15,902.35-21,945.20-8,828.72

Finding the Fourth Proportional to 15,902.35, 21,945.20 and 8,828.72

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Solution

The fourth proportional to 15,902.35, 21,945.20 and 8,828.72 is: 12,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.35 : 21,945.20 = 8,828.72 : x
  2. Step 2: Convert to fraction form
    15,902.35/21,945.20 = 8,828.72/x
  3. Step 3: Cross multiply
    15,902.35x = 21,945.20 × 8,828.72
  4. Step 4: Simplify right side
    15,902.35x = 193,748,036.86
  5. Step 5: Solve for x
    x = 193,748,036.86/15,902.35
  6. Step 6: Final answer
    x = 12,183.61

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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.