Home / 20,334.36-28,060.12-11,380.35

Finding the Fourth Proportional to 20,334.36, 28,060.12 and 11,380.35

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Solution

The fourth proportional to 20,334.36, 28,060.12 and 11,380.35 is: 15,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.36 : 28,060.12 = 11,380.35 : x
  2. Step 2: Convert to fraction form
    20,334.36/28,060.12 = 11,380.35/x
  3. Step 3: Cross multiply
    20,334.36x = 28,060.12 × 11,380.35
  4. Step 4: Simplify right side
    20,334.36x = 319,333,986.64
  5. Step 5: Solve for x
    x = 319,333,986.64/20,334.36
  6. Step 6: Final answer
    x = 15,704.16

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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.