Home / 13,109.04-18,090.44-7,520

Finding the Fourth Proportional to 13,109.04, 18,090.44 and 7,520

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Solution

The fourth proportional to 13,109.04, 18,090.44 and 7,520 is: 10,377.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.04 : 18,090.44 = 7,520 : x
  2. Step 2: Convert to fraction form
    13,109.04/18,090.44 = 7,520/x
  3. Step 3: Cross multiply
    13,109.04x = 18,090.44 × 7,520
  4. Step 4: Simplify right side
    13,109.04x = 136,040,108.80
  5. Step 5: Solve for x
    x = 136,040,108.80/13,109.04
  6. Step 6: Final answer
    x = 10,377.58

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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.