Home / 30,612.03-45,912.24-8,419.92

Finding the Fourth Proportional to 30,612.03, 45,912.24 and 8,419.92

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Solution

The fourth proportional to 30,612.03, 45,912.24 and 8,419.92 is: 12,628.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.03 : 45,912.24 = 8,419.92 : x
  2. Step 2: Convert to fraction form
    30,612.03/45,912.24 = 8,419.92/x
  3. Step 3: Cross multiply
    30,612.03x = 45,912.24 × 8,419.92
  4. Step 4: Simplify right side
    30,612.03x = 386,577,387.82
  5. Step 5: Solve for x
    x = 386,577,387.82/30,612.03
  6. Step 6: Final answer
    x = 12,628.28

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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.