Home / 30,212.20-45,327.35-10,490.86

Finding the Fourth Proportional to 30,212.20, 45,327.35 and 10,490.86

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Solution

The fourth proportional to 30,212.20, 45,327.35 and 10,490.86 is: 15,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.20 : 45,327.35 = 10,490.86 : x
  2. Step 2: Convert to fraction form
    30,212.20/45,327.35 = 10,490.86/x
  3. Step 3: Cross multiply
    30,212.20x = 45,327.35 × 10,490.86
  4. Step 4: Simplify right side
    30,212.20x = 475,522,883.02
  5. Step 5: Solve for x
    x = 475,522,883.02/30,212.20
  6. Step 6: Final answer
    x = 15,739.43

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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.