Home / 30,238.92-45,399.52-20,855.76

Finding the Fourth Proportional to 30,238.92, 45,399.52 and 20,855.76

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Solution

The fourth proportional to 30,238.92, 45,399.52 and 20,855.76 is: 31,312.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,238.92 : 45,399.52 = 20,855.76 : x
  2. Step 2: Convert to fraction form
    30,238.92/45,399.52 = 20,855.76/x
  3. Step 3: Cross multiply
    30,238.92x = 45,399.52 × 20,855.76
  4. Step 4: Simplify right side
    30,238.92x = 946,841,493.24
  5. Step 5: Solve for x
    x = 946,841,493.24/30,238.92
  6. Step 6: Final answer
    x = 31,312.01

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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.