Home / 12,687.06-19,002.85-6,436.30

Finding the Fourth Proportional to 12,687.06, 19,002.85 and 6,436.30

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Solution

The fourth proportional to 12,687.06, 19,002.85 and 6,436.30 is: 9,640.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.06 : 19,002.85 = 6,436.30 : x
  2. Step 2: Convert to fraction form
    12,687.06/19,002.85 = 6,436.30/x
  3. Step 3: Cross multiply
    12,687.06x = 19,002.85 × 6,436.30
  4. Step 4: Simplify right side
    12,687.06x = 122,308,043.46
  5. Step 5: Solve for x
    x = 122,308,043.46/12,687.06
  6. Step 6: Final answer
    x = 9,640.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.