Home / 25,676.80-38,511.60-8,148.40

Finding the Fourth Proportional to 25,676.80, 38,511.60 and 8,148.40

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Solution

The fourth proportional to 25,676.80, 38,511.60 and 8,148.40 is: 12,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,676.80 : 38,511.60 = 8,148.40 : x
  2. Step 2: Convert to fraction form
    25,676.80/38,511.60 = 8,148.40/x
  3. Step 3: Cross multiply
    25,676.80x = 38,511.60 × 8,148.40
  4. Step 4: Simplify right side
    25,676.80x = 313,807,921.44
  5. Step 5: Solve for x
    x = 313,807,921.44/25,676.80
  6. Step 6: Final answer
    x = 12,221.46

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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.