Home / 30,220.48-45,346.22-12,464.78

Finding the Fourth Proportional to 30,220.48, 45,346.22 and 12,464.78

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Solution

The fourth proportional to 30,220.48, 45,346.22 and 12,464.78 is: 18,703.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.48 : 45,346.22 = 12,464.78 : x
  2. Step 2: Convert to fraction form
    30,220.48/45,346.22 = 12,464.78/x
  3. Step 3: Cross multiply
    30,220.48x = 45,346.22 × 12,464.78
  4. Step 4: Simplify right side
    30,220.48x = 565,230,656.13
  5. Step 5: Solve for x
    x = 565,230,656.13/30,220.48
  6. Step 6: Final answer
    x = 18,703.56

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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.