Home / 11,078.08-15,284.58-6,827.72

Finding the Fourth Proportional to 11,078.08, 15,284.58 and 6,827.72

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Solution

The fourth proportional to 11,078.08, 15,284.58 and 6,827.72 is: 9,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.08 : 15,284.58 = 6,827.72 : x
  2. Step 2: Convert to fraction form
    11,078.08/15,284.58 = 6,827.72/x
  3. Step 3: Cross multiply
    11,078.08x = 15,284.58 × 6,827.72
  4. Step 4: Simplify right side
    11,078.08x = 104,358,832.56
  5. Step 5: Solve for x
    x = 104,358,832.56/11,078.08
  6. Step 6: Final answer
    x = 9,420.30

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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.