Home / 12,699.39-17,539.93-11,961.28

Finding the Fourth Proportional to 12,699.39, 17,539.93 and 11,961.28

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Solution

The fourth proportional to 12,699.39, 17,539.93 and 11,961.28 is: 16,520.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.39 : 17,539.93 = 11,961.28 : x
  2. Step 2: Convert to fraction form
    12,699.39/17,539.93 = 11,961.28/x
  3. Step 3: Cross multiply
    12,699.39x = 17,539.93 × 11,961.28
  4. Step 4: Simplify right side
    12,699.39x = 209,800,005.93
  5. Step 5: Solve for x
    x = 209,800,005.93/12,699.39
  6. Step 6: Final answer
    x = 16,520.47

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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.