Home / 13,791.12-20,678.34-6,191.02

Finding the Fourth Proportional to 13,791.12, 20,678.34 and 6,191.02

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Solution

The fourth proportional to 13,791.12, 20,678.34 and 6,191.02 is: 9,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.12 : 20,678.34 = 6,191.02 : x
  2. Step 2: Convert to fraction form
    13,791.12/20,678.34 = 6,191.02/x
  3. Step 3: Cross multiply
    13,791.12x = 20,678.34 × 6,191.02
  4. Step 4: Simplify right side
    13,791.12x = 128,020,016.51
  5. Step 5: Solve for x
    x = 128,020,016.51/13,791.12
  6. Step 6: Final answer
    x = 9,282.79

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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.