Home / 20,103.10-27,743.75-11,152.29

Finding the Fourth Proportional to 20,103.10, 27,743.75 and 11,152.29

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Solution

The fourth proportional to 20,103.10, 27,743.75 and 11,152.29 is: 15,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.10 : 27,743.75 = 11,152.29 : x
  2. Step 2: Convert to fraction form
    20,103.10/27,743.75 = 11,152.29/x
  3. Step 3: Cross multiply
    20,103.10x = 27,743.75 × 11,152.29
  4. Step 4: Simplify right side
    20,103.10x = 309,406,345.69
  5. Step 5: Solve for x
    x = 309,406,345.69/20,103.10
  6. Step 6: Final answer
    x = 15,390.98

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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.