Home / 12,117.90-18,173.32-4,720.70

Finding the Fourth Proportional to 12,117.90, 18,173.32 and 4,720.70

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Solution

The fourth proportional to 12,117.90, 18,173.32 and 4,720.70 is: 7,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.90 : 18,173.32 = 4,720.70 : x
  2. Step 2: Convert to fraction form
    12,117.90/18,173.32 = 4,720.70/x
  3. Step 3: Cross multiply
    12,117.90x = 18,173.32 × 4,720.70
  4. Step 4: Simplify right side
    12,117.90x = 85,790,791.72
  5. Step 5: Solve for x
    x = 85,790,791.72/12,117.90
  6. Step 6: Final answer
    x = 7,079.67

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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.