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Finding the Fourth Proportional to 30,921.44, 46,360.48 and 15,891.68

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Solution

The fourth proportional to 30,921.44, 46,360.48 and 15,891.68 is: 23,826.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.44 : 46,360.48 = 15,891.68 : x
  2. Step 2: Convert to fraction form
    30,921.44/46,360.48 = 15,891.68/x
  3. Step 3: Cross multiply
    30,921.44x = 46,360.48 × 15,891.68
  4. Step 4: Simplify right side
    30,921.44x = 736,745,912.81
  5. Step 5: Solve for x
    x = 736,745,912.81/30,921.44
  6. Step 6: Final answer
    x = 23,826.38

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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.