Home / 16,878.64-25,320.84-5,191.60

Finding the Fourth Proportional to 16,878.64, 25,320.84 and 5,191.60

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Solution

The fourth proportional to 16,878.64, 25,320.84 and 5,191.60 is: 7,788.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,878.64 : 25,320.84 = 5,191.60 : x
  2. Step 2: Convert to fraction form
    16,878.64/25,320.84 = 5,191.60/x
  3. Step 3: Cross multiply
    16,878.64x = 25,320.84 × 5,191.60
  4. Step 4: Simplify right side
    16,878.64x = 131,455,672.94
  5. Step 5: Solve for x
    x = 131,455,672.94/16,878.64
  6. Step 6: Final answer
    x = 7,788.29

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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.