Home / 30,400.90-45,599.19-8,215.54

Finding the Fourth Proportional to 30,400.90, 45,599.19 and 8,215.54

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Solution

The fourth proportional to 30,400.90, 45,599.19 and 8,215.54 is: 12,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,400.90 : 45,599.19 = 8,215.54 : x
  2. Step 2: Convert to fraction form
    30,400.90/45,599.19 = 8,215.54/x
  3. Step 3: Cross multiply
    30,400.90x = 45,599.19 × 8,215.54
  4. Step 4: Simplify right side
    30,400.90x = 374,621,969.41
  5. Step 5: Solve for x
    x = 374,621,969.41/30,400.90
  6. Step 6: Final answer
    x = 12,322.73

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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.