Home / 20,616.39-30,877.86-13,119.93

Finding the Fourth Proportional to 20,616.39, 30,877.86 and 13,119.93

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Solution

The fourth proportional to 20,616.39, 30,877.86 and 13,119.93 is: 19,650.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.39 : 30,877.86 = 13,119.93 : x
  2. Step 2: Convert to fraction form
    20,616.39/30,877.86 = 13,119.93/x
  3. Step 3: Cross multiply
    20,616.39x = 30,877.86 × 13,119.93
  4. Step 4: Simplify right side
    20,616.39x = 405,115,361.75
  5. Step 5: Solve for x
    x = 405,115,361.75/20,616.39
  6. Step 6: Final answer
    x = 19,650.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.