Home / 30,629.61-45,956.30-11,922.79

Finding the Fourth Proportional to 30,629.61, 45,956.30 and 11,922.79

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Solution

The fourth proportional to 30,629.61, 45,956.30 and 11,922.79 is: 17,888.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.61 : 45,956.30 = 11,922.79 : x
  2. Step 2: Convert to fraction form
    30,629.61/45,956.30 = 11,922.79/x
  3. Step 3: Cross multiply
    30,629.61x = 45,956.30 × 11,922.79
  4. Step 4: Simplify right side
    30,629.61x = 547,927,228.99
  5. Step 5: Solve for x
    x = 547,927,228.99/30,629.61
  6. Step 6: Final answer
    x = 17,888.81

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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.