Home / 30,172.20-45,240.12-13,529.22

Finding the Fourth Proportional to 30,172.20, 45,240.12 and 13,529.22

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Solution

The fourth proportional to 30,172.20, 45,240.12 and 13,529.22 is: 20,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.20 : 45,240.12 = 13,529.22 : x
  2. Step 2: Convert to fraction form
    30,172.20/45,240.12 = 13,529.22/x
  3. Step 3: Cross multiply
    30,172.20x = 45,240.12 × 13,529.22
  4. Step 4: Simplify right side
    30,172.20x = 612,063,536.31
  5. Step 5: Solve for x
    x = 612,063,536.31/30,172.20
  6. Step 6: Final answer
    x = 20,285.68

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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.