Home / 13,769.56-19,001.55-7,801.21

Finding the Fourth Proportional to 13,769.56, 19,001.55 and 7,801.21

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Solution

The fourth proportional to 13,769.56, 19,001.55 and 7,801.21 is: 10,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.56 : 19,001.55 = 7,801.21 : x
  2. Step 2: Convert to fraction form
    13,769.56/19,001.55 = 7,801.21/x
  3. Step 3: Cross multiply
    13,769.56x = 19,001.55 × 7,801.21
  4. Step 4: Simplify right side
    13,769.56x = 148,235,081.88
  5. Step 5: Solve for x
    x = 148,235,081.88/13,769.56
  6. Step 6: Final answer
    x = 10,765.42

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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.