Home / 30,104.80-45,162.60-12,576.40

Finding the Fourth Proportional to 30,104.80, 45,162.60 and 12,576.40

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Solution

The fourth proportional to 30,104.80, 45,162.60 and 12,576.40 is: 18,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,104.80 : 45,162.60 = 12,576.40 : x
  2. Step 2: Convert to fraction form
    30,104.80/45,162.60 = 12,576.40/x
  3. Step 3: Cross multiply
    30,104.80x = 45,162.60 × 12,576.40
  4. Step 4: Simplify right side
    30,104.80x = 567,982,922.64
  5. Step 5: Solve for x
    x = 567,982,922.64/30,104.80
  6. Step 6: Final answer
    x = 18,866.86

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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.