Home / 13,574.72-20,357.09-4,687.79

Finding the Fourth Proportional to 13,574.72, 20,357.09 and 4,687.79

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Solution

The fourth proportional to 13,574.72, 20,357.09 and 4,687.79 is: 7,029.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,574.72 : 20,357.09 = 4,687.79 : x
  2. Step 2: Convert to fraction form
    13,574.72/20,357.09 = 4,687.79/x
  3. Step 3: Cross multiply
    13,574.72x = 20,357.09 × 4,687.79
  4. Step 4: Simplify right side
    13,574.72x = 95,429,769.79
  5. Step 5: Solve for x
    x = 95,429,769.79/13,574.72
  6. Step 6: Final answer
    x = 7,029.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.