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Finding the Fourth Proportional to 12,860.09, 17,746.09 and 7,193.86

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Solution

The fourth proportional to 12,860.09, 17,746.09 and 7,193.86 is: 9,927.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.09 : 17,746.09 = 7,193.86 : x
  2. Step 2: Convert to fraction form
    12,860.09/17,746.09 = 7,193.86/x
  3. Step 3: Cross multiply
    12,860.09x = 17,746.09 × 7,193.86
  4. Step 4: Simplify right side
    12,860.09x = 127,662,824.66
  5. Step 5: Solve for x
    x = 127,662,824.66/12,860.09
  6. Step 6: Final answer
    x = 9,927.06

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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.