Home / 20,012.74-27,619.72-11,515.23

Finding the Fourth Proportional to 20,012.74, 27,619.72 and 11,515.23

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Solution

The fourth proportional to 20,012.74, 27,619.72 and 11,515.23 is: 15,892.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,012.74 : 27,619.72 = 11,515.23 : x
  2. Step 2: Convert to fraction form
    20,012.74/27,619.72 = 11,515.23/x
  3. Step 3: Cross multiply
    20,012.74x = 27,619.72 × 11,515.23
  4. Step 4: Simplify right side
    20,012.74x = 318,047,399.55
  5. Step 5: Solve for x
    x = 318,047,399.55/20,012.74
  6. Step 6: Final answer
    x = 15,892.25

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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.