Home / 30,628.55-45,954.71-11,921.72

Finding the Fourth Proportional to 30,628.55, 45,954.71 and 11,921.72

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Solution

The fourth proportional to 30,628.55, 45,954.71 and 11,921.72 is: 17,887.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.55 : 45,954.71 = 11,921.72 : x
  2. Step 2: Convert to fraction form
    30,628.55/45,954.71 = 11,921.72/x
  3. Step 3: Cross multiply
    30,628.55x = 45,954.71 × 11,921.72
  4. Step 4: Simplify right side
    30,628.55x = 547,859,240.58
  5. Step 5: Solve for x
    x = 547,859,240.58/30,628.55
  6. Step 6: Final answer
    x = 17,887.21

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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.