Home / 12,884.68-17,774.88-8,911.36

Finding the Fourth Proportional to 12,884.68, 17,774.88 and 8,911.36

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Solution

The fourth proportional to 12,884.68, 17,774.88 and 8,911.36 is: 12,293.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,884.68 : 17,774.88 = 8,911.36 : x
  2. Step 2: Convert to fraction form
    12,884.68/17,774.88 = 8,911.36/x
  3. Step 3: Cross multiply
    12,884.68x = 17,774.88 × 8,911.36
  4. Step 4: Simplify right side
    12,884.68x = 158,398,354.64
  5. Step 5: Solve for x
    x = 158,398,354.64/12,884.68
  6. Step 6: Final answer
    x = 12,293.54

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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.