Home / 30,255.04-45,387.42-12,729.88

Finding the Fourth Proportional to 30,255.04, 45,387.42 and 12,729.88

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Solution

The fourth proportional to 30,255.04, 45,387.42 and 12,729.88 is: 19,096.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,255.04 : 45,387.42 = 12,729.88 : x
  2. Step 2: Convert to fraction form
    30,255.04/45,387.42 = 12,729.88/x
  3. Step 3: Cross multiply
    30,255.04x = 45,387.42 × 12,729.88
  4. Step 4: Simplify right side
    30,255.04x = 577,776,410.11
  5. Step 5: Solve for x
    x = 577,776,410.11/30,255.04
  6. Step 6: Final answer
    x = 19,096.86

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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.