Home / 16,815.15-23,213.28-13,029.75

Finding the Fourth Proportional to 16,815.15, 23,213.28 and 13,029.75

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Solution

The fourth proportional to 16,815.15, 23,213.28 and 13,029.75 is: 17,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.15 : 23,213.28 = 13,029.75 : x
  2. Step 2: Convert to fraction form
    16,815.15/23,213.28 = 13,029.75/x
  3. Step 3: Cross multiply
    16,815.15x = 23,213.28 × 13,029.75
  4. Step 4: Simplify right side
    16,815.15x = 302,463,235.08
  5. Step 5: Solve for x
    x = 302,463,235.08/16,815.15
  6. Step 6: Final answer
    x = 17,987.54

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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.