Home / 20,155.96-30,240.66-7,011.64

Finding the Fourth Proportional to 20,155.96, 30,240.66 and 7,011.64

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Solution

The fourth proportional to 20,155.96, 30,240.66 and 7,011.64 is: 10,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.96 : 30,240.66 = 7,011.64 : x
  2. Step 2: Convert to fraction form
    20,155.96/30,240.66 = 7,011.64/x
  3. Step 3: Cross multiply
    20,155.96x = 30,240.66 × 7,011.64
  4. Step 4: Simplify right side
    20,155.96x = 212,036,621.28
  5. Step 5: Solve for x
    x = 212,036,621.28/20,155.96
  6. Step 6: Final answer
    x = 10,519.80

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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.