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Finding the Fourth Proportional to 30,356.59, 45,523.94 and 12,827.78

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Solution

The fourth proportional to 30,356.59, 45,523.94 and 12,827.78 is: 19,237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,356.59 : 45,523.94 = 12,827.78 : x
  2. Step 2: Convert to fraction form
    30,356.59/45,523.94 = 12,827.78/x
  3. Step 3: Cross multiply
    30,356.59x = 45,523.94 × 12,827.78
  4. Step 4: Simplify right side
    30,356.59x = 583,971,087.05
  5. Step 5: Solve for x
    x = 583,971,087.05/30,356.59
  6. Step 6: Final answer
    x = 19,237.05

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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.