Home / 13,079.34-19,619.01-3,218.81

Finding the Fourth Proportional to 13,079.34, 19,619.01 and 3,218.81

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Solution

The fourth proportional to 13,079.34, 19,619.01 and 3,218.81 is: 4,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.34 : 19,619.01 = 3,218.81 : x
  2. Step 2: Convert to fraction form
    13,079.34/19,619.01 = 3,218.81/x
  3. Step 3: Cross multiply
    13,079.34x = 19,619.01 × 3,218.81
  4. Step 4: Simplify right side
    13,079.34x = 63,149,767.48
  5. Step 5: Solve for x
    x = 63,149,767.48/13,079.34
  6. Step 6: Final answer
    x = 4,828.21

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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.