Home / 13,768.72-19,000.20-7,801.27

Finding the Fourth Proportional to 13,768.72, 19,000.20 and 7,801.27

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Solution

The fourth proportional to 13,768.72, 19,000.20 and 7,801.27 is: 10,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.72 : 19,000.20 = 7,801.27 : x
  2. Step 2: Convert to fraction form
    13,768.72/19,000.20 = 7,801.27/x
  3. Step 3: Cross multiply
    13,768.72x = 19,000.20 × 7,801.27
  4. Step 4: Simplify right side
    13,768.72x = 148,225,690.25
  5. Step 5: Solve for x
    x = 148,225,690.25/13,768.72
  6. Step 6: Final answer
    x = 10,765.39

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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.