Home / 13,905.63-19,147.91-12,013.88

Finding the Fourth Proportional to 13,905.63, 19,147.91 and 12,013.88

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Solution

The fourth proportional to 13,905.63, 19,147.91 and 12,013.88 is: 16,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.63 : 19,147.91 = 12,013.88 : x
  2. Step 2: Convert to fraction form
    13,905.63/19,147.91 = 12,013.88/x
  3. Step 3: Cross multiply
    13,905.63x = 19,147.91 × 12,013.88
  4. Step 4: Simplify right side
    13,905.63x = 230,040,537.18
  5. Step 5: Solve for x
    x = 230,040,537.18/13,905.63
  6. Step 6: Final answer
    x = 16,542.98

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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.