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Finding the Fourth Proportional to 30,252.79, 45,379.22 and 11,784.79

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Solution

The fourth proportional to 30,252.79, 45,379.22 and 11,784.79 is: 17,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,252.79 : 45,379.22 = 11,784.79 : x
  2. Step 2: Convert to fraction form
    30,252.79/45,379.22 = 11,784.79/x
  3. Step 3: Cross multiply
    30,252.79x = 45,379.22 × 11,784.79
  4. Step 4: Simplify right side
    30,252.79x = 534,784,578.06
  5. Step 5: Solve for x
    x = 534,784,578.06/30,252.79
  6. Step 6: Final answer
    x = 17,677.20

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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.