Home / 12,079.94-18,117.96-3,312.80

Finding the Fourth Proportional to 12,079.94, 18,117.96 and 3,312.80

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Solution

The fourth proportional to 12,079.94, 18,117.96 and 3,312.80 is: 4,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.94 : 18,117.96 = 3,312.80 : x
  2. Step 2: Convert to fraction form
    12,079.94/18,117.96 = 3,312.80/x
  3. Step 3: Cross multiply
    12,079.94x = 18,117.96 × 3,312.80
  4. Step 4: Simplify right side
    12,079.94x = 60,021,177.89
  5. Step 5: Solve for x
    x = 60,021,177.89/12,079.94
  6. Step 6: Final answer
    x = 4,968.67

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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.