Home / 20,271.24-30,410.64-7,790.76

Finding the Fourth Proportional to 20,271.24, 30,410.64 and 7,790.76

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Solution

The fourth proportional to 20,271.24, 30,410.64 and 7,790.76 is: 11,687.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.24 : 30,410.64 = 7,790.76 : x
  2. Step 2: Convert to fraction form
    20,271.24/30,410.64 = 7,790.76/x
  3. Step 3: Cross multiply
    20,271.24x = 30,410.64 × 7,790.76
  4. Step 4: Simplify right side
    20,271.24x = 236,921,997.69
  5. Step 5: Solve for x
    x = 236,921,997.69/20,271.24
  6. Step 6: Final answer
    x = 11,687.59

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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.