Home / 13,272.30-18,317.79-7,970.04

Finding the Fourth Proportional to 13,272.30, 18,317.79 and 7,970.04

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Solution

The fourth proportional to 13,272.30, 18,317.79 and 7,970.04 is: 10,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.30 : 18,317.79 = 7,970.04 : x
  2. Step 2: Convert to fraction form
    13,272.30/18,317.79 = 7,970.04/x
  3. Step 3: Cross multiply
    13,272.30x = 18,317.79 × 7,970.04
  4. Step 4: Simplify right side
    13,272.30x = 145,993,519.01
  5. Step 5: Solve for x
    x = 145,993,519.01/13,272.30
  6. Step 6: Final answer
    x = 10,999.87

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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.