Home / 20,291.23-27,991.69-13,577.14

Finding the Fourth Proportional to 20,291.23, 27,991.69 and 13,577.14

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Solution

The fourth proportional to 20,291.23, 27,991.69 and 13,577.14 is: 18,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.23 : 27,991.69 = 13,577.14 : x
  2. Step 2: Convert to fraction form
    20,291.23/27,991.69 = 13,577.14/x
  3. Step 3: Cross multiply
    20,291.23x = 27,991.69 × 13,577.14
  4. Step 4: Simplify right side
    20,291.23x = 380,047,095.01
  5. Step 5: Solve for x
    x = 380,047,095.01/20,291.23
  6. Step 6: Final answer
    x = 18,729.62

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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.