Home / 16,820.78-25,187.40-8,991.32

Finding the Fourth Proportional to 16,820.78, 25,187.40 and 8,991.32

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Solution

The fourth proportional to 16,820.78, 25,187.40 and 8,991.32 is: 13,463.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.78 : 25,187.40 = 8,991.32 : x
  2. Step 2: Convert to fraction form
    16,820.78/25,187.40 = 8,991.32/x
  3. Step 3: Cross multiply
    16,820.78x = 25,187.40 × 8,991.32
  4. Step 4: Simplify right side
    16,820.78x = 226,467,847.43
  5. Step 5: Solve for x
    x = 226,467,847.43/16,820.78
  6. Step 6: Final answer
    x = 13,463.58

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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.