Home / 13,990.47-19,220.48-12,517.89

Finding the Fourth Proportional to 13,990.47, 19,220.48 and 12,517.89

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Solution

The fourth proportional to 13,990.47, 19,220.48 and 12,517.89 is: 17,197.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.47 : 19,220.48 = 12,517.89 : x
  2. Step 2: Convert to fraction form
    13,990.47/19,220.48 = 12,517.89/x
  3. Step 3: Cross multiply
    13,990.47x = 19,220.48 × 12,517.89
  4. Step 4: Simplify right side
    13,990.47x = 240,599,885.68
  5. Step 5: Solve for x
    x = 240,599,885.68/13,990.47
  6. Step 6: Final answer
    x = 17,197.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.