Home / 20,007.55-30,011.34-5,216.45

Finding the Fourth Proportional to 20,007.55, 30,011.34 and 5,216.45

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Solution

The fourth proportional to 20,007.55, 30,011.34 and 5,216.45 is: 7,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007.55 : 30,011.34 = 5,216.45 : x
  2. Step 2: Convert to fraction form
    20,007.55/30,011.34 = 5,216.45/x
  3. Step 3: Cross multiply
    20,007.55x = 30,011.34 × 5,216.45
  4. Step 4: Simplify right side
    20,007.55x = 156,552,654.54
  5. Step 5: Solve for x
    x = 156,552,654.54/20,007.55
  6. Step 6: Final answer
    x = 7,824.68

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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.