Home / 42,100.20-63,149.76-12,115.22

Finding the Fourth Proportional to 42,100.20, 63,149.76 and 12,115.22

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Solution

The fourth proportional to 42,100.20, 63,149.76 and 12,115.22 is: 18,172.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,100.20 : 63,149.76 = 12,115.22 : x
  2. Step 2: Convert to fraction form
    42,100.20/63,149.76 = 12,115.22/x
  3. Step 3: Cross multiply
    42,100.20x = 63,149.76 × 12,115.22
  4. Step 4: Simplify right side
    42,100.20x = 765,072,919.60
  5. Step 5: Solve for x
    x = 765,072,919.60/42,100.20
  6. Step 6: Final answer
    x = 18,172.67

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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.