Home / 20,131.81-30,207.75-9,046.42

Finding the Fourth Proportional to 20,131.81, 30,207.75 and 9,046.42

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Solution

The fourth proportional to 20,131.81, 30,207.75 and 9,046.42 is: 13,574.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.81 : 30,207.75 = 9,046.42 : x
  2. Step 2: Convert to fraction form
    20,131.81/30,207.75 = 9,046.42/x
  3. Step 3: Cross multiply
    20,131.81x = 30,207.75 × 9,046.42
  4. Step 4: Simplify right side
    20,131.81x = 273,271,993.76
  5. Step 5: Solve for x
    x = 273,271,993.76/20,131.81
  6. Step 6: Final answer
    x = 13,574.14

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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.