Home / 20,011.45-30,012.60-7,532.78

Finding the Fourth Proportional to 20,011.45, 30,012.60 and 7,532.78

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Solution

The fourth proportional to 20,011.45, 30,012.60 and 7,532.78 is: 11,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011.45 : 30,012.60 = 7,532.78 : x
  2. Step 2: Convert to fraction form
    20,011.45/30,012.60 = 7,532.78/x
  3. Step 3: Cross multiply
    20,011.45x = 30,012.60 × 7,532.78
  4. Step 4: Simplify right side
    20,011.45x = 226,078,313.03
  5. Step 5: Solve for x
    x = 226,078,313.03/20,011.45
  6. Step 6: Final answer
    x = 11,297.45

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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.