Home / 16,815.36-23,183.51-13,779.18

Finding the Fourth Proportional to 16,815.36, 23,183.51 and 13,779.18

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Solution

The fourth proportional to 16,815.36, 23,183.51 and 13,779.18 is: 18,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.36 : 23,183.51 = 13,779.18 : x
  2. Step 2: Convert to fraction form
    16,815.36/23,183.51 = 13,779.18/x
  3. Step 3: Cross multiply
    16,815.36x = 23,183.51 × 13,779.18
  4. Step 4: Simplify right side
    16,815.36x = 319,449,688.43
  5. Step 5: Solve for x
    x = 319,449,688.43/16,815.36
  6. Step 6: Final answer
    x = 18,997.49

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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.