Home / 20,021.76-27,631.06-11,525.16

Finding the Fourth Proportional to 20,021.76, 27,631.06 and 11,525.16

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Solution

The fourth proportional to 20,021.76, 27,631.06 and 11,525.16 is: 15,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.76 : 27,631.06 = 11,525.16 : x
  2. Step 2: Convert to fraction form
    20,021.76/27,631.06 = 11,525.16/x
  3. Step 3: Cross multiply
    20,021.76x = 27,631.06 × 11,525.16
  4. Step 4: Simplify right side
    20,021.76x = 318,452,387.47
  5. Step 5: Solve for x
    x = 318,452,387.47/20,021.76
  6. Step 6: Final answer
    x = 15,905.31

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1.5x scale

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.