Home / 11,913.38-16,441.21-6,878.51

Finding the Fourth Proportional to 11,913.38, 16,441.21 and 6,878.51

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Solution

The fourth proportional to 11,913.38, 16,441.21 and 6,878.51 is: 9,492.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.38 : 16,441.21 = 6,878.51 : x
  2. Step 2: Convert to fraction form
    11,913.38/16,441.21 = 6,878.51/x
  3. Step 3: Cross multiply
    11,913.38x = 16,441.21 × 6,878.51
  4. Step 4: Simplify right side
    11,913.38x = 113,091,027.40
  5. Step 5: Solve for x
    x = 113,091,027.40/11,913.38
  6. Step 6: Final answer
    x = 9,492.77

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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.