Home / 20,265.85-30,412.06-9,172.64

Finding the Fourth Proportional to 20,265.85, 30,412.06 and 9,172.64

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Solution

The fourth proportional to 20,265.85, 30,412.06 and 9,172.64 is: 13,764.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.85 : 30,412.06 = 9,172.64 : x
  2. Step 2: Convert to fraction form
    20,265.85/30,412.06 = 9,172.64/x
  3. Step 3: Cross multiply
    20,265.85x = 30,412.06 × 9,172.64
  4. Step 4: Simplify right side
    20,265.85x = 278,958,931.14
  5. Step 5: Solve for x
    x = 278,958,931.14/20,265.85
  6. Step 6: Final answer
    x = 13,764.98

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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.