Home / 20,301.54-28,017.75-11,690.41

Finding the Fourth Proportional to 20,301.54, 28,017.75 and 11,690.41

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Solution

The fourth proportional to 20,301.54, 28,017.75 and 11,690.41 is: 16,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.54 : 28,017.75 = 11,690.41 : x
  2. Step 2: Convert to fraction form
    20,301.54/28,017.75 = 11,690.41/x
  3. Step 3: Cross multiply
    20,301.54x = 28,017.75 × 11,690.41
  4. Step 4: Simplify right side
    20,301.54x = 327,538,786.24
  5. Step 5: Solve for x
    x = 327,538,786.24/20,301.54
  6. Step 6: Final answer
    x = 16,133.69

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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.