Home / 30,628.76-45,960.96-11,921.72

Finding the Fourth Proportional to 30,628.76, 45,960.96 and 11,921.72

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Solution

The fourth proportional to 30,628.76, 45,960.96 and 11,921.72 is: 17,889.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.76 : 45,960.96 = 11,921.72 : x
  2. Step 2: Convert to fraction form
    30,628.76/45,960.96 = 11,921.72/x
  3. Step 3: Cross multiply
    30,628.76x = 45,960.96 × 11,921.72
  4. Step 4: Simplify right side
    30,628.76x = 547,933,696.05
  5. Step 5: Solve for x
    x = 547,933,696.05/30,628.76
  6. Step 6: Final answer
    x = 17,889.52

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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.