Home / 20,301.99-28,015.74-11,349.42

Finding the Fourth Proportional to 20,301.99, 28,015.74 and 11,349.42

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Solution

The fourth proportional to 20,301.99, 28,015.74 and 11,349.42 is: 15,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.99 : 28,015.74 = 11,349.42 : x
  2. Step 2: Convert to fraction form
    20,301.99/28,015.74 = 11,349.42/x
  3. Step 3: Cross multiply
    20,301.99x = 28,015.74 × 11,349.42
  4. Step 4: Simplify right side
    20,301.99x = 317,962,399.87
  5. Step 5: Solve for x
    x = 317,962,399.87/20,301.99
  6. Step 6: Final answer
    x = 15,661.64

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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.