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Finding the Fourth Proportional to 30,393.60, 45,593.76 and 12,622.32

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Solution

The fourth proportional to 30,393.60, 45,593.76 and 12,622.32 is: 18,934.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.60 : 45,593.76 = 12,622.32 : x
  2. Step 2: Convert to fraction form
    30,393.60/45,593.76 = 12,622.32/x
  3. Step 3: Cross multiply
    30,393.60x = 45,593.76 × 12,622.32
  4. Step 4: Simplify right side
    30,393.60x = 575,499,028.72
  5. Step 5: Solve for x
    x = 575,499,028.72/30,393.60
  6. Step 6: Final answer
    x = 18,934.88

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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.