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Finding the Fourth Proportional to 30,371.40, 45,546.30 and 13,739.40

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Solution

The fourth proportional to 30,371.40, 45,546.30 and 13,739.40 is: 20,604.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,371.40 : 45,546.30 = 13,739.40 : x
  2. Step 2: Convert to fraction form
    30,371.40/45,546.30 = 13,739.40/x
  3. Step 3: Cross multiply
    30,371.40x = 45,546.30 × 13,739.40
  4. Step 4: Simplify right side
    30,371.40x = 625,778,834.22
  5. Step 5: Solve for x
    x = 625,778,834.22/30,371.40
  6. Step 6: Final answer
    x = 20,604.21

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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.