Home / 21,155.82-29,183.44-13,484.85

Finding the Fourth Proportional to 21,155.82, 29,183.44 and 13,484.85

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Solution

The fourth proportional to 21,155.82, 29,183.44 and 13,484.85 is: 18,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.82 : 29,183.44 = 13,484.85 : x
  2. Step 2: Convert to fraction form
    21,155.82/29,183.44 = 13,484.85/x
  3. Step 3: Cross multiply
    21,155.82x = 29,183.44 × 13,484.85
  4. Step 4: Simplify right side
    21,155.82x = 393,534,193.02
  5. Step 5: Solve for x
    x = 393,534,193.02/21,155.82
  6. Step 6: Final answer
    x = 18,601.70

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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.