Home / 12,005.49-18,008.67-3,240.63

Finding the Fourth Proportional to 12,005.49, 18,008.67 and 3,240.63

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Solution

The fourth proportional to 12,005.49, 18,008.67 and 3,240.63 is: 4,861.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.49 : 18,008.67 = 3,240.63 : x
  2. Step 2: Convert to fraction form
    12,005.49/18,008.67 = 3,240.63/x
  3. Step 3: Cross multiply
    12,005.49x = 18,008.67 × 3,240.63
  4. Step 4: Simplify right side
    12,005.49x = 58,359,436.26
  5. Step 5: Solve for x
    x = 58,359,436.26/12,005.49
  6. Step 6: Final answer
    x = 4,861.06

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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.