Home / 12,829.60-17,702.64-8,108.32

Finding the Fourth Proportional to 12,829.60, 17,702.64 and 8,108.32

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Solution

The fourth proportional to 12,829.60, 17,702.64 and 8,108.32 is: 11,188.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,829.60 : 17,702.64 = 8,108.32 : x
  2. Step 2: Convert to fraction form
    12,829.60/17,702.64 = 8,108.32/x
  3. Step 3: Cross multiply
    12,829.60x = 17,702.64 × 8,108.32
  4. Step 4: Simplify right side
    12,829.60x = 143,538,669.96
  5. Step 5: Solve for x
    x = 143,538,669.96/12,829.60
  6. Step 6: Final answer
    x = 11,188.09

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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.