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Finding the Fourth Proportional to 30,591.90, 45,900.84 and 11,885.16

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Solution

The fourth proportional to 30,591.90, 45,900.84 and 11,885.16 is: 17,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,591.90 : 45,900.84 = 11,885.16 : x
  2. Step 2: Convert to fraction form
    30,591.90/45,900.84 = 11,885.16/x
  3. Step 3: Cross multiply
    30,591.90x = 45,900.84 × 11,885.16
  4. Step 4: Simplify right side
    30,591.90x = 545,538,827.53
  5. Step 5: Solve for x
    x = 545,538,827.53/30,591.90
  6. Step 6: Final answer
    x = 17,832.79

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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.