Home / 12,630.76-18,946.20-3,270.12

Finding the Fourth Proportional to 12,630.76, 18,946.20 and 3,270.12

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Solution

The fourth proportional to 12,630.76, 18,946.20 and 3,270.12 is: 4,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.76 : 18,946.20 = 3,270.12 : x
  2. Step 2: Convert to fraction form
    12,630.76/18,946.20 = 3,270.12/x
  3. Step 3: Cross multiply
    12,630.76x = 18,946.20 × 3,270.12
  4. Step 4: Simplify right side
    12,630.76x = 61,956,347.54
  5. Step 5: Solve for x
    x = 61,956,347.54/12,630.76
  6. Step 6: Final answer
    x = 4,905.20

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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.