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Finding the Fourth Proportional to 30,393.04, 45,555 and 12,851.92

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Solution

The fourth proportional to 30,393.04, 45,555 and 12,851.92 is: 19,263.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.04 : 45,555 = 12,851.92 : x
  2. Step 2: Convert to fraction form
    30,393.04/45,555 = 12,851.92/x
  3. Step 3: Cross multiply
    30,393.04x = 45,555 × 12,851.92
  4. Step 4: Simplify right side
    30,393.04x = 585,469,215.60
  5. Step 5: Solve for x
    x = 585,469,215.60/30,393.04
  6. Step 6: Final answer
    x = 19,263.27

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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.