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Finding the Fourth Proportional to 30,349.40, 45,513.30 and 13,717.40

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Solution

The fourth proportional to 30,349.40, 45,513.30 and 13,717.40 is: 20,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,349.40 : 45,513.30 = 13,717.40 : x
  2. Step 2: Convert to fraction form
    30,349.40/45,513.30 = 13,717.40/x
  3. Step 3: Cross multiply
    30,349.40x = 45,513.30 × 13,717.40
  4. Step 4: Simplify right side
    30,349.40x = 624,324,141.42
  5. Step 5: Solve for x
    x = 624,324,141.42/30,349.40
  6. Step 6: Final answer
    x = 20,571.22

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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.