Home / 20,303.42-30,512.54-11,987.36

Finding the Fourth Proportional to 20,303.42, 30,512.54 and 11,987.36

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Solution

The fourth proportional to 20,303.42, 30,512.54 and 11,987.36 is: 18,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.42 : 30,512.54 = 11,987.36 : x
  2. Step 2: Convert to fraction form
    20,303.42/30,512.54 = 11,987.36/x
  3. Step 3: Cross multiply
    20,303.42x = 30,512.54 × 11,987.36
  4. Step 4: Simplify right side
    20,303.42x = 365,764,801.49
  5. Step 5: Solve for x
    x = 365,764,801.49/20,303.42
  6. Step 6: Final answer
    x = 18,014.94

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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.