Home / 20,615.40-30,923.10-7,467.75

Finding the Fourth Proportional to 20,615.40, 30,923.10 and 7,467.75

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Solution

The fourth proportional to 20,615.40, 30,923.10 and 7,467.75 is: 11,201.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.40 : 30,923.10 = 7,467.75 : x
  2. Step 2: Convert to fraction form
    20,615.40/30,923.10 = 7,467.75/x
  3. Step 3: Cross multiply
    20,615.40x = 30,923.10 × 7,467.75
  4. Step 4: Simplify right side
    20,615.40x = 230,925,980.03
  5. Step 5: Solve for x
    x = 230,925,980.03/20,615.40
  6. Step 6: Final answer
    x = 11,201.63

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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.