Home / 12,415.20-18,630.90-6,576.18

Finding the Fourth Proportional to 12,415.20, 18,630.90 and 6,576.18

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Solution

The fourth proportional to 12,415.20, 18,630.90 and 6,576.18 is: 9,868.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.20 : 18,630.90 = 6,576.18 : x
  2. Step 2: Convert to fraction form
    12,415.20/18,630.90 = 6,576.18/x
  3. Step 3: Cross multiply
    12,415.20x = 18,630.90 × 6,576.18
  4. Step 4: Simplify right side
    12,415.20x = 122,520,151.96
  5. Step 5: Solve for x
    x = 122,520,151.96/12,415.20
  6. Step 6: Final answer
    x = 9,868.56

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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.