Home / 18,665.76-27,999.60-4,814.88

Finding the Fourth Proportional to 18,665.76, 27,999.60 and 4,814.88

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Solution

The fourth proportional to 18,665.76, 27,999.60 and 4,814.88 is: 7,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.76 : 27,999.60 = 4,814.88 : x
  2. Step 2: Convert to fraction form
    18,665.76/27,999.60 = 4,814.88/x
  3. Step 3: Cross multiply
    18,665.76x = 27,999.60 × 4,814.88
  4. Step 4: Simplify right side
    18,665.76x = 134,814,714.05
  5. Step 5: Solve for x
    x = 134,814,714.05/18,665.76
  6. Step 6: Final answer
    x = 7,222.57

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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.