Home / 10,120.50-15,180.75-3,195

Finding the Fourth Proportional to 10,120.50, 15,180.75 and 3,195

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Solution

The fourth proportional to 10,120.50, 15,180.75 and 3,195 is: 4,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.50 : 15,180.75 = 3,195 : x
  2. Step 2: Convert to fraction form
    10,120.50/15,180.75 = 3,195/x
  3. Step 3: Cross multiply
    10,120.50x = 15,180.75 × 3,195
  4. Step 4: Simplify right side
    10,120.50x = 48,502,496.25
  5. Step 5: Solve for x
    x = 48,502,496.25/10,120.50
  6. Step 6: Final answer
    x = 4,792.50

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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.