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Finding the Fourth Proportional to 30,453.89, 45,659.13 and 11,718.14

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Solution

The fourth proportional to 30,453.89, 45,659.13 and 11,718.14 is: 17,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,453.89 : 45,659.13 = 11,718.14 : x
  2. Step 2: Convert to fraction form
    30,453.89/45,659.13 = 11,718.14/x
  3. Step 3: Cross multiply
    30,453.89x = 45,659.13 × 11,718.14
  4. Step 4: Simplify right side
    30,453.89x = 535,039,849.32
  5. Step 5: Solve for x
    x = 535,039,849.32/30,453.89
  6. Step 6: Final answer
    x = 17,568.85

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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.