Home / 11,018.83-16,534.31-4,778.90

Finding the Fourth Proportional to 11,018.83, 16,534.31 and 4,778.90

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Solution

The fourth proportional to 11,018.83, 16,534.31 and 4,778.90 is: 7,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,018.83 : 16,534.31 = 4,778.90 : x
  2. Step 2: Convert to fraction form
    11,018.83/16,534.31 = 4,778.90/x
  3. Step 3: Cross multiply
    11,018.83x = 16,534.31 × 4,778.90
  4. Step 4: Simplify right side
    11,018.83x = 79,015,814.06
  5. Step 5: Solve for x
    x = 79,015,814.06/11,018.83
  6. Step 6: Final answer
    x = 7,170.98

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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.