Home / 13,039.09-19,390.88-12,623.90

Finding the Fourth Proportional to 13,039.09, 19,390.88 and 12,623.90

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Solution

The fourth proportional to 13,039.09, 19,390.88 and 12,623.90 is: 18,773.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.09 : 19,390.88 = 12,623.90 : x
  2. Step 2: Convert to fraction form
    13,039.09/19,390.88 = 12,623.90/x
  3. Step 3: Cross multiply
    13,039.09x = 19,390.88 × 12,623.90
  4. Step 4: Simplify right side
    13,039.09x = 244,788,530.03
  5. Step 5: Solve for x
    x = 244,788,530.03/13,039.09
  6. Step 6: Final answer
    x = 18,773.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.