Home / 13,443.02-20,136.80-7,879.46

Finding the Fourth Proportional to 13,443.02, 20,136.80 and 7,879.46

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Solution

The fourth proportional to 13,443.02, 20,136.80 and 7,879.46 is: 11,802.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.02 : 20,136.80 = 7,879.46 : x
  2. Step 2: Convert to fraction form
    13,443.02/20,136.80 = 7,879.46/x
  3. Step 3: Cross multiply
    13,443.02x = 20,136.80 × 7,879.46
  4. Step 4: Simplify right side
    13,443.02x = 158,667,110.13
  5. Step 5: Solve for x
    x = 158,667,110.13/13,443.02
  6. Step 6: Final answer
    x = 11,802.94

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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.