Home / 12,985.08-17,914.56-8,729.39

Finding the Fourth Proportional to 12,985.08, 17,914.56 and 8,729.39

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Solution

The fourth proportional to 12,985.08, 17,914.56 and 8,729.39 is: 12,043.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.08 : 17,914.56 = 8,729.39 : x
  2. Step 2: Convert to fraction form
    12,985.08/17,914.56 = 8,729.39/x
  3. Step 3: Cross multiply
    12,985.08x = 17,914.56 × 8,729.39
  4. Step 4: Simplify right side
    12,985.08x = 156,383,180.92
  5. Step 5: Solve for x
    x = 156,383,180.92/12,985.08
  6. Step 6: Final answer
    x = 12,043.30

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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.